Title: Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP &amp; Mobile App
Author: Saad Iqbal
Published: <strong>2017 年 10 月 15 日</strong>
Last modified: 2026 年 4 月 1 日

---

搜尋外掛

![](https://ps.w.org/post-smtp/assets/banner-772x250.png?rev=3443196)

![](https://ps.w.org/post-smtp/assets/icon-128x128.gif?rev=3209655)

# Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App

 由 [Saad Iqbal](https://profiles.wordpress.org/saadiqbal/) 開發

[下載](https://downloads.wordpress.org/plugin/post-smtp.3.9.1.zip)

 * [詳細資料](https://tw.wordpress.org/plugins/post-smtp/#description)
 * [使用者評論](https://tw.wordpress.org/plugins/post-smtp/#reviews)
 * [開發資訊](https://tw.wordpress.org/plugins/post-smtp/#developers)

 [技術支援](https://wordpress.org/support/plugin/post-smtp/)

## 外掛說明

[👑 Go Pro](https://postmansmtp.com/pricing/?utm_source=wp_org&utm_medium=read_me)
| [💻Live Demo](https://www.tastewp.com/plugins/post-smtp) | [🔌Extensions](https://postmansmtp.com/extension/?utm_source=wp_org&utm_medium=readme_top)
| [📱Mobile Application](https://postmansmtp.com/documentation/advance-functionality/postsmtp-mobile-app/?utm_source=wp_org&utm_medium=readme_top)

### WordPress 電子郵件 SMTP 寄件外掛

Are you facing the WordPress not sending emails issue❓Don’t worry! Install the 
Post SMTP Plugin **aka** (WordPress mail SMTP plugin), for smooth WordPress email
deliverability.

Over **400,000** website owners use **Post SMTP** daily to send WordPress emails
securely and reliably💯 using Gmail SMTP, Microsoft Office 365/Outlook, and other
SMTP integrations.

Post SMTP is a free, next-generation WordPress SMTP plugin that improves email deliverability
for your WordPress site.

The best part is that to ensure high email deliverability the Post SMTP plugin offers
15+ SMTP mailer options, including Gmail, Brevo, Microsoft 365 SMTP (formerly Office
365), Amazon SES, Zoho Mail, Postmark, Mailgun, SendGrid, etc.

With the ✨[Post SMTP Pro version](https://postmansmtp.com/pricing/?utm_source=wp_org&utm_medium=read_me)
✨, you can unlock even more advanced features, such as detailed email logs, email
delivery stats and reporting, email open-tracking, premium SMTP integration (Microsoft
365, Amazon SES, and Zoho Mail SMTP), multiple options for email alerts (i.e., Teams,
Webhook, Twilio, and Slack), and much more.

### What is SMTP, and Why Do You Need It?

**SMTP**, short for Simple Mail Transfer Protocol, is the most widely used protocol
for online email transmission. SMTP configuration with proper authentication for
your WordPress site ensures that your WordPress emails do not end up in spam.

**By default**, WordPress sends emails using the PHP mail function, which isn’t 
ideal because most WordPress hosting servers don’t support PHP email.

On top of that, most email clients, such as Outlook (Office 365 / Microsoft365),
Yahoo, Gmail, Brevo, Zoho, Amazon SES, Mailgun, etc., automatically block or mark
spam emails that lack proper authentication.

That’s why you need to install the Post SMTP plugin on your WordPress site to configure
the SMTP mailer of your choice with one-click SMTP setup for Gmail, Microsoft 365,
and more.

### How Does Post SMTP Work?

Post SMTP allows you to easily replace the default PHP mail function (wp_mail) of
your WordPress site with the SMTP mailer of your choice, like [Microsoft 365](https://postmansmtp.com/extensions/office-365-extension-for-post-smtp/?utm_source=wp_org&utm_medium=read_me)(
Office 365), Brevo, Zoho, [SendGrid](https://postmansmtp.com/configure-wordpress-with-sendgrid/),
[Mailgun SMTP](https://postmansmtp.com/setup-mailgun-for-wordpress/), Gmail [(Gmail SMTP Server)](https://postmansmtp.com/how-to-configure-post-smtp-with-gmailgsuite-using-oauth/),
Post Mark, Amazon SES etc., which in turn improves WordPress email deliverability.

**This WordPress mail SMTP plugin provides detailed email logs, email open tracking,
email alerts, and a mobile app to monitor WordPress email deliverability.**

Additionally, with a [3-step setup wizard](https://postmansmtp.com/introducing-the-new-3-step-setup-wizard-for-post-smtp/?utm_source=wp_org&utm_medium=read_me)
you can configure any SMTP mailer (e.g., Gmail SMTP (Gmail one-click setup), Microsoft
Office 365, Mailgun, Brevo, etc.) securely via API Keys in seconds without providing
your SMTP account credentials.

**NOTE:** If you want to set up a Gmail SMTP server for WordPress, check out our
detailed guide on [how to configure Gmail SMTP server](https://postmansmtp.com/how-to-configure-post-smtp-with-gmailgsuite-using-oauth/)
to send WordPress emails reliably.

Ultimately, this WordPress SMTP plugin helps you fix all your issues related to 
[WordPress not sending emails.](https://postmansmtp.com/wordpress-not-sending-emails/?utm_source=wp_org&utm_medium=read_me)

### ⚡ Features That Make Post SMTP Stand Out

✅ **Quick Setup Wizard:** Easy-to-use and powerful 3-Step Setup Wizard for quick
WordPress SMTP configuration with One-click SMTP setup for Gmail SMTP and Microsoft
365 SMTP.

✅ **SPF, DKIM & DMARC Checks:** Keep an eye on domain’s reputation with out built-
in Spam Score Checker that looks at your DNS records..

✅ **Detailed Email Logs:** Quickly view, filter, and check the status of all your
WordPress emails and error messages with a simple click, ensuring your email logs
are always up to date.

✅ **Post SMTP Mobile App:** Get WordPress email alerts directly on your mobile 
phone so you can track email deliverability on the go.

✅ **Extensive Email Reporting:** Get a thorough report at a glance regarding your
WordPress email deliverability performance, including email open tracking and other
important stats.

✅ **Resend Email Attachments [PRO]:** With a single click, you can resend any email
attachment right through your email log screen, maintaining a seamless record in
your email logs.

✅ **OAuth 2.0 Support:** Authenticate all major SMTP service providers’ accounts(
i.e., Microsoft Office 365/Microsoft365, Brevo, Gmail SMTP (Gmail one-click setup),
Amazon SES, SendGrid, Mailgun, etc.) securely using APIs.

✅ **Fallback Mailing:** Easily set up a backup WordPress SMTP mailer to send any
transactional email in case of a failure with the main mailer.

✅ **Instant Failure Notification:** In case of any WordPress email delivery failure,
you’ll get an instant email alert, Slack notification, SMS (via Twilio), push notification(
via webhook and Chrome Extension), etc.

✅ **Free Chrome Extension:**Receive all your WordPress email alerts for failed 
email deliveries directly into your Chrome browser window.

✅ **Weekly Email Summary:** Get a snapshot of your WordPress email deliverability
report right in your inbox every week, which reveals the total number of emails,
the number of failed emails, total successful email deliveries, and your recent 
email logs.

✅ **Unparalleled Customer Support:** We offer multiple support options, including
email, a WordPress forum, and even one-on-one expert assistance for [WordPress SMTP Configuration](https://postmansmtp.com/configuration-request/?utm_source=wp_org&utm_medium=read_me)
and all your email delivery issues.

### ⚡ Post SMTP Mobile App: Get an Instant Pulse of Your WordPress Emails

✅ **Keep track of Your Emails:** You can monitor all the emails sent from your 
WordPress site and check the status of each email.

✅ **Get Instant Alerts:** When an email fails to deliver, you will receive an instant
notification on your phone.

✅ **Resend Failed Emails [PRO]:** With one tap on your app, you can resend any 
failed email.
 Preview Any Email: You can preview your emails and see how it looks.

✅ **Connect Multiple Sites [PRO]:** Monitor email logs and get email failure notifications(
email alerts) for all your WordPress sites right from the app.

✅ **Troubleshoot Errors:** Quickly fix email failure issues by viewing the error
details with a single tap.

### SMTP Mailer Options for Post SMTP

With Post SMTP, you get many SMTP mailer options, such as:

 * [Sweego SMTP](https://postmansmtp.com/docs/mailers/how-to-setup-sweego-with-post-smtp/?utm_source=wp_org&utm_medium=read_me)–**
   Newly Added**
 * [Mailtrap SMTP](https://postmansmtp.com/docs/mailers/how-to-setup-mailtrap-with-post-smtp/?utm_source=wp_org&utm_medium=read_me)–**
   Newly Added**
 * [Emailit SMTP](https://postmansmtp.com/docs/mailers/how-to-setup-emailit-with-post-smtp/?utm_source=wp_org&utm_medium=read_me)
 * [Resend SMTP](https://postmansmtp.com/docs/mailers/how-to-setup-resend-with-post-smtp/?utm_source=wp_org&utm_medium=read_me)
 * [MailerSend SMTP](https://postmansmtp.com/documentation/sockets-addons/how-to-setup-mailersend-with-post-smtp/?utm_source=wp_org&utm_medium=read_me)
 * [Brevo (formerly Sendinblue) SMTP](https://postmansmtp.com/documentation/sockets-addons/how-to-setup-sendinblue-aka-brevo-with-post-smtp/?utm_source=wp_org&utm_medium=read_me)
 * [Microsoft 365 SMTP (Formerly Office 365 and Outlook)](https://postmansmtp.com/office-365-for-wordpress/?utm_source=wp_org&utm_medium=read_me)
 * [Gmail SMTP (Gmail API, G Suite, Google Workspace)](https://postmansmtp.com/how-to-configure-post-smtp-with-gmailgsuite-using-oauth/?utm_source=wp_org&utm_medium=read_me)
 * [Amazon SES SMTP](https://postmansmtp.com/extensions/post-smtp-extension-for-amazon-ses/?utm_source=wp_org&utm_medium=read_me)
 * [Zoho Mail SMTP](https://postmansmtp.com/extensions/zoho-mail-pro-extension/?utm_source=wp_org&utm_medium=read_me)
 * [Mandrill SMTP](https://postmansmtp.com/documentation/sockets-addons/how-to-setup-mandrill-with-post-smtp/?utm_source=wp_org&utm_medium=read_me)
 * [Mailgun SMTP](https://postmansmtp.com/setup-mailgun-for-wordpress/?utm_source=wp_org&utm_medium=read_me)
 * [SendGrid SMTP](https://postmansmtp.com/documentation/sockets-addons/how-to-setup-sendgrid-with-post-smtp/?utm_source=wp_org&utm_medium=read_me)
 * [Mailjet SMTP](https://postmansmtp.com/documentation/sockets-addons/configure-post-smtp-with-mailjet/?utm_source=wp_org&utm_medium=read_me)
 * [SparkPost SMTP](https://postmansmtp.com/documentation/sockets-addons/sparkpost/?utm_source=wp_org&utm_medium=read_me)
 * [Postmark SMTP](https://postmansmtp.com/documentation/sockets-addons/postmark/?utm_source=wp_org&utm_medium=read_me)
 * [Elastic Email SMTP](https://postmansmtp.com/documentation/sockets-addons/configure-post-smtp-with-elastic-email/?utm_source=wp_org&utm_medium=read_me)
 * [Other SMTP](https://postmansmtp.com/documentation/sockets-addons/configure-post-smtp-with-other-smtp/?utm_source=wp_org&utm_medium=read_me)(
   To connect any SMTP server)

You often need to install a different WordPress mail smtp plugin for each SMTP mailer
setup. However, with Post SMTP, you can set up all popular SMTP providers, such 
as Gmail one-click setup, Microsoft Office 365, Mailgun, Amazon SES, Zoho Mail, 
etc.

### Microsoft 365 SMTP

Millions of businesses around the world use Microsoft 365 (formerly Office 365) 
or Outlook for their email communications. With Post SMTP Pro, you can easily connect
your existing [Outlook or Microsoft 365 (formerly Office365) account with WordPress](https://postmansmtp.com/connect-microsoft-outlook-to-wordpress/?utm_source=wp_org&utm_medium=read_me)
via **one-click SMTP setup** to improve email deliverability.

👉 For more details, check out our guide on [how to set up Microsoft 365 for WordPress emails.](https://postmansmtp.com/office-365-for-wordpress/?utm_source=wp_org&utm_medium=read_me)

### Amazon SES SMTP

Amazon SES (Simple Email Service) is a cloud-based email service that can send transactional
and mass emails. SES is cost-effective, reliable, and scalable. Using the Post SMTP
Pro, you can securely integrate your Amazon SES account with WordPress via APIs 
so that you can send large numbers of emails on a budget.

👉 For more details, check out our [Amazon SES documentation.](https://postmansmtp.com/documentation/sockets-addons/amazon-ses-pro/?utm_source=wp_org&utm_medium=read_me)

### Zoho Mail SMTP

Connect your Zoho mail personal or business account with WordPress via Post SMTP
Pro to improve email deliverability. It has a 99.9% server uptime and offers a free
option.

👉 For more details, check out our [Zoho Mail documentation](https://postmansmtp.com/documentation/sockets-addons/zoho-with-post-smtp/?utm_source=wp_org&utm_medium=read_me).

👉 To learn about all the supported SMTP mailers, check out our [Complete SMTP Mailer Guide.](https://postmansmtp.com/documentation/sockets-addons/post-smtp-complete-mailer-guide/?utm_source=wp_org&utm_medium=read_me)

### ⚡ Added Benefits of Getting Post SMTP Pro

The Post SMTP Pro gives you an edge that makes your WordPress email management and
performance reporting a breeze! With Post SMTP Pro, you get the following additional
perks:

✅ **Microsoft 365 One-Click:** Upgrade to unlock a smooth and effortless Microsoft
email setup. Just enable Microsoft 365 One-Click Setup. With a single toggle, Post
SMTP automatically configures everything needed for secure and reliable Outlook /
Office 365 email delivery no manual settings required, no technical steps to worry
about.

✅ **Google (Gmail) SMTP One-Click:** Upgrade now for a worry-free Gmail SMTP integration.
Activate Gmail One-Click Setup and let Post SMTP Setup Wizard handle all the API-
related technicalities.

✅ **Microsoft Teams Notifications:** This WordPress SMTP plugin enables you to 
receive real-time notifications for your emails on Microsoft Teams with a simple
webhook.

✅ **Native SMTP Integration:** You can use this WordPress SMTP plugin to securely
configure 15+ SMTP service provider accounts, such as Microsoft 365 (Microsoft Office
365), Gmail SMTP, Amazon SES, Zoho Mail, Mailgun, Postmark, etc., with WordPress
using APIs.

✅ **Twilio (SMS)** With this WordPress SMTP plugin, you can easily configure and
receive all your WordPress email failure alerts through SMS by connecting your Twilio
account.

✅ **Secondary SMTP Connection:** Using the Post SMTP Pro, you can set up multiple
SMTP mailers so that for any reason, whenever an email fails to deliver, Post SMTP
will automatically route that email through the secondary SMTP connection. In turn,
this will improve your email delivery rate.

✅ **Weekly Email Health Report:** As a Post SMTP Pro member, you get a weekly email
report that reveals all your deliverability statistics at a glance, such as the 
total number of emails sent from your WordPress site, the number of failed emails,
the total number of successful email deliveries, and the complete email logs report
so you can identify any issues right away without login into your WordPress.

✅ **Email Open Tracking:** Are you curious about which of your emails get opened?
With Post SMTP Pro, you can easily view email open tracking right on your email 
log screen, which greatly enhances your ability to analyze the performance of your
WordPress emails.

✅ **Auto Resend Failed Emails:** With Post SMTP Pro, you can effortlessly increase
your WordPress email delivery success rate by simply specifying the number of resubmission
attempts after the first failed submission.

✅ **Email Batching and Quota Scheduling:** Avoid any spam detection and daily email
limit exceeding issues with the Post SMTP email batching and quota scheduling feature.
As a pro user, you can easily specify the duration and number of emails per batch
and choose how often to send the emails (hourly, daily, weekly, or monthly) for 
optimal email delivery.

✅ **Priority Support:** We offer exceptional customer support to all the Post SMTP
Pro users. You can access our team of WordPress experts on one-on-one email support
24/7 for any WordPress email-related issue. Also, we offer WordPress SMTP Configuration
service on demand.

### 🆕 MainWP Post SMTP Extension – NEW

**Manage WordPress SMTP Configuration Across All Your Sites From A Single Dashboard**

With MainWP Post SMTP Extension, you can:

 * **Set up and sync your SMTP** settings for all your sites with one click.
 * **Ensure email deliverability** with backup SMTP connections.
 * **Receive instant email failure alerts via email** webhook, Slack, SMS, and Microsoft
   Teams.
 * **Track and resend your WordPress emails** with a dedicated mobile app
 * **Access detailed email logs** of all your sites in one place

**MainWP Post SMTP Extension** is the ultimate solution for WordPress email management.
Get it today and enjoy the benefits of easy and efficient WP SMTP management.🙃

### ⛑ Need Help? Get Expert Assistance on Demand!!!

With our Expert Assistance, you can get help with email deliverability and SMTP 
plugin configuration for Gmail, Microsoft Office 365, and any SMTP setup for WordPress.

All you need is to [click here](https://postmansmtp.com/configuration-request/?utm_source=wp_org&utm_medium=read_me),
fill out the form, sit back, and relax while our WordPress expert sets up your SMTP
configuration. Also, you can request us to configure all your [DNS records](https://postmansmtp.com/dmarc-spf-dkim/?utm_source=wp_org&utm_medium=read_me)
for proper email authentication.

In short, our Expert Assistance is your one-stop destination for all your WordPress
email delivery issues.

### Compatibility and Support

 * Contact Form 7
 * Woocommerce
 * New User Approve
 * Password Protected
 * Elementor Forms
 * Gravity Forms
 * Login Designer
 * Visual Forms Builder
 * Mailster Newsletter plugin
 * SendPress Newsletters
 * WP HTML Mail
 * Email Templates

.. and every other plugin that uses the WordPress API wp_mail to send mail!

### Try Our Other Awesome WordPress Plugins

 * **[Gutena Forms](https://wordpress.org/plugins/gutena-forms/)** – Create modern,
   responsive contact forms directly in the Gutenberg block editor. Add advanced
   fields, protect against spam with reCAPTCHA and Cloudflare Turnstile, manage 
   form entries, and more.
 * **[Password Protected](https://wordpress.org/plugins/password-protected/)** –
   Secure your WordPress site, posts, pages, and categories with simple password
   protection.
 * **[WP EasyPay](https://wordpress.org/plugins/wp-easypay/)** – Accept Square payments
   and donations easily on your WordPress site.
 * **[WC Shop Sync](https://wordpress.org/plugins/wc-shop-sync/)** – Add Square 
   payments and sync WooCommerce products, customers, and orders with your Square
   POS.
 * **[Advanced File Manager](https://wordpress.org/plugins/file-manager-advanced/)**–
   Easily manage and organize your WordPress files directly from the dashboard.
 * **[CF7 Apps](https://wordpress.org/plugins/cf7-apps/)** – Add honeypot, hCaptcha,
   and database entries to Contact Form 7. New extensions are continuously added.
 * **[myCred](https://wordpress.org/plugins/mycred/)** – Add gamification, rewards,
   ranks, badges, and points management systems to your WordPress website.
 * **[New User Approve](https://wordpress.org/plugins/new-user-approve/)** – Control
   user registrations by manually approving or denying new signups.
 * **[Bookify](https://wordpress.org/plugins/bookify/)** – Your go-to online bookings
   and appointment scheduling plugin for WordPress.
 * **[All In One Login](https://wordpress.org/plugins/all-in-one-login/)** – Secure
   your WordPress login page, change the wp-login.php URL, and add social logins
   like Google, Facebook, Microsoft, LINE, and more.
 * **[WPExperts WooCommerce Store](https://store.wpexperts.io/woocommerce/)** – 
   Explore premium WooCommerce plugins and professional solutions by WPExperts.=
   = Requirements ==
 * WordPress v6.2 and above is recommended
 * PHP v7.6 and above is recommended.
 * Memory should be at least 800KiB per processing at idle.
 * Ensure your email service provider allows SMTP connection through 3rd party applications,
   if not you can have it enabled.(Other SMTP)
 * For reliable email deliverability, valid credentials are required.

## 螢幕擷圖

 * [[
 * WordPress Post SMTP Dashboard – To access all the Post SMTP functionality at 
   a glance.
 * [[
 * Post SMTP New Setup Wizard (Step-01) – Choose your SMTP mailer
 * [[
 * Post SMTP New Setup Wizard (Step -02) – Configure your mailer settings
 * [[
 * Post New Setup Wizard (Step -03) – Send test email
 * [[
 * Detailed Email Logs – View failed and successfully sent emails, resend, preview,
   and analyze error details
 * [[
 * Post SMTP Mobile App Screen – Scan the QR code from the mobile app and connect
   it to track your WordPress emails.
 * [[
 * Post SMTP Settings – Set email failure alerts on Microsoft Teams, Slack, Admin
   Email, Twilio, and Chrome extension

## 常見問題集

### What is OAuth 2.0?

A modern replacement for traditional password-based authentication. Post supports
the OAuth 2.0 implementations of all three major e-mail providers: Gmail, Office365,
Brevo, Mailgun, Hotmail and Yahoo Mail.

### How does OAuth 2.0 work?

Post requests a limited access OAuth 2.0 token (valet key) to access the APIs (enter
the house) and perform a specific service (handle Gmail SMTP, stay out of Google
Docs) with no need for you to surrender your username and password credentials (
master house key).

Once access is granted, Post commandeers the WordPress wp_mail() function to provide
an incredibly stable mail sub-system.

There are many reasons why OAuth 2.0 is better than any password-based mechanism:

 * Post will never ask for your password, so your password can’t be stolen
 * If you change your password regularly, you will never have to update Post’s configuration
 * You have tighter control over the data Post has access to. For Google users, 
   it can never access your Calendar or Docs or YouTube; for Yahoo users, it can
   never access your Flickr
 * If your WordPress site gets hacked, you can revoke Post’s email access without
   impacting any other application or website that has access to your account

> **[NEVER give out your Gmail, Microsoft or Yahoo password](http://blog.varonis.com/giving-away-your-passwords/)**
> to a 3rd-party or 3rd-party program that you don’t fully trust.

### Can I use this plugin to send via Outlook, Microsoft 365, Gmail SMTP, Zoho, Yahoo, or SendGrid SMTP?

Yes! With the Post SMTP Plugin, you can configure any SMTP mailer account, including
Brevo, Mailgun, and SendGrid on your WordPress site. Check out our [detailed SMTP configuration documentation](https://postmansmtp.com/documentation/sockets-addons/?utm_source=wp_org&utm_medium=read_me)
for all major SMTP service providers.

### What is a Client ID?

To use OAuth, your website needs its own Client ID. The Client ID is used to control
authentication and authorization and is tied to the specific URL of your website.
If you manage several websites, you will need a different Client ID for each one.

### How do I get a Microsoft Client ID? (For Hotmail/Live/Outlook.com users only!)

 1. Go to [Microsoft account Developer Center](https://account.live.com/developers/applications/index)
    and select ‘Create application’.
 2. In the ‘Application name’ field, enter ‘Post SMTP’. Select ‘I accept.’
 3. Select ‘API Settings’ from under ‘Settings’.
 4. In ‘Redirect URL’, enter the redirect URI given by Post (either from the wizard
    or from the manual configuration page). Select Save.
 5. Select ‘App Settings’ from under ‘Settings’.
 6. Enter the Client ID and Client Secret displayed here into the Post’s settings page.

### How do I get a Yahoo Client ID? (For Yahoo Mail users only!)

 1. Go to [Yahoo Developer Network](https://developer.yahoo.com/apps/) and select ‘
    Create an App’.
 2. In the ‘Application Name’ field, enter ‘Post SMTP’. For ‘Application Type’, choose‘
    Web Application’.
 3. In ‘Home Page URL’, enter the ‘Home Page URL’ given by Post.
 4. In ‘Callback Domain’, enter the ‘Callback Domain’ given by Post.
 5. Under ‘API Permissions’, choose ‘Mail.’ Under ‘Mail’ choose ‘Read/Write’
 6. 點擊 [建立應用程式]
 7. Enter the Client ID and Client Secret displayed here into the Post’s settings page.

### How can I revoke Post’s OAuth 2.0 access?

 * If you have a Google Account from the [Google Developer’s Console](https://www.google.com/accounts/Logout?continue=https://console.developers.google.com),
   use the Delete button under the Client ID.
 * If you have a Microsoft Live account, from the [Microsoft account Developer Center](https://account.live.com/developers/applications/index),
   select the Application and choose Delete Application.
 * If you have a Yahoo Account, from the [Yahoo Developer Network My Apps](https://developer.yahoo.com/apps/),
   select the Application and choose Delete App.

### How can I report security bugs?

You can report security bugs through the Patchstack Vulnerability Disclosure Program.
The Patchstack team helps validate, triage, and handle any security vulnerabilities.
[Report a security vulnerability.](https://patchstack.com/database/vulnerability/post-smtp)

## 使用者評論

![](https://secure.gravatar.com/avatar/69ca5fc0671a7a29a8dae311aa9bea934b573d85dce9cec26f84a25dd2a8c72e?
s=60&d=retro&r=g)

### 󠀁[Steals your email address without asking, violates GDPR](https://wordpress.org/support/topic/steals-your-email-address-without-asking-violates-gdpr/)󠁿

 [adamzea](https://profiles.wordpress.org/adamzea/) 2026 年 4 月 6 日 1 則留言

As soon as activating the plug-in, it will scrape your email address from your Wordpress
installation user profile and start sending you emails & periodic newsletter spam
without explicit permission. There is no “enter email address” field, no “subscribe”
button, no “verify email address” button… it just automatically starts sending emails.
Even if you don’t click the link in the verification email, other emails start arriving.
If there was an explicit opt-in for that kind of thing it would be fine, but automatically
doing it violates GDPR laws.

![](https://secure.gravatar.com/avatar/c36bf58dfd9d423ae54175d8cbbbe345e12840a910c756147c20454074b95547?
s=60&d=retro&r=g)

### 󠀁[Great Plugin](https://wordpress.org/support/topic/great-plugin-41335/)󠁿

 [jcalmeida](https://profiles.wordpress.org/jcalmeida/) 2026 年 3 月 2 日

Great Plugin easy to config and troubleshoot.

![](https://secure.gravatar.com/avatar/95f31741ffc72fe9cf4972020b78ce7a8ca4d74400bc71152fc1a8cf63c77f2d?
s=60&d=retro&r=g)

### 󠀁[Great Support for the setup of PostSMTP](https://wordpress.org/support/topic/great-support-for-the-setup-of-postsmtp/)󠁿

 [AdamJB13](https://profiles.wordpress.org/adamjb13/) 2026 年 2 月 26 日

Aqib was very helpful in setting up PostSMTP on my site. The plug-in is working 
very well.

![](https://secure.gravatar.com/avatar/48738d4df98e44412e7555be90dd9c8bf8bc30fb38c8375bd7876573ab3f4ee1?
s=60&d=retro&r=g)

### 󠀁[Excellent support for a great plugin](https://wordpress.org/support/topic/excellent-support-for-a-great-plugin-4/)󠁿

 [mahonyson](https://profiles.wordpress.org/mahonyson/) 2026 年 3 月 13 日

After purchasing PostSMTP Pro and facing some incompatibility issues with other 
plugins I asked for help and I was impressed by the awesome and rapid support given
by M Aqib Khan to solve the issue.Great thanks! Just as an information for people
who are using AIOS Security and Firewall : the Open Email Tracking needs the option“
Advanced Character String Filter” to be disabled (AIOS => Firewall => PHP rules 
=> String filtering). I highly recommend this plugin.

![](https://secure.gravatar.com/avatar/02dd27f8adfac3591c60696b1db6b617f2787cc3f523e146b6993b53fec5bfea?
s=60&d=retro&r=g)

### 󠀁[The best SMTP plugin and Customer Support](https://wordpress.org/support/topic/the-best-smtp-plugin-and-customer-support/)󠁿

 [Michael](https://profiles.wordpress.org/wa5dpr3s211/) 2026 年 2 月 5 日

PostSMTP is hands-down the best of its kind in the Wordpress world. I have been 
using for years for all my websites.But today I want to say HUGE THANKS to Mr. Aqib
Khan for your prompt and excellent support helping me work out the error code that
I was receiving.So, in short, top-notch plugin with the best customer support behind
it!

![](https://secure.gravatar.com/avatar/6b682f564a6b812d31aaeac6d70a02206d77dfca515e0095de9fa4e386e6ab21?
s=60&d=retro&r=g)

### 󠀁[Fantastic](https://wordpress.org/support/topic/fantastic-3486/)󠁿

 [russ19](https://profiles.wordpress.org/russ19/) 2026 年 1 月 23 日

Absolutely the best and easy setup.

 [ 閱讀全部 519 則使用者評論 ](https://wordpress.org/support/plugin/post-smtp/reviews/)

## 參與者及開發者

以下人員參與了開源軟體〈Post SMTP – Complete Email Deliverability and SMTP Solution
with Email Logs, Alerts, Backup SMTP & Mobile App〉的開發相關工作。

參與者

 *   [ Saad Iqbal ](https://profiles.wordpress.org/saadiqbal/)
 *   [ WPExperts.io ](https://profiles.wordpress.org/wpexpertsio/)

〈Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts,
Backup SMTP & Mobile App〉外掛目前已有 18 個本地化語言版本。 感謝[全部譯者](https://translate.wordpress.org/projects/wp-plugins/post-smtp/contributors)
為這個外掛做出的貢獻。

[將〈Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App〉外掛本地化為台灣繁體中文版](https://translate.wordpress.org/projects/wp-plugins/post-smtp)

### 對開發相關資訊感興趣？

任何人均可[瀏覽程式碼](https://plugins.trac.wordpress.org/browser/post-smtp/)、查看
[SVN 存放庫](https://plugins.svn.wordpress.org/post-smtp/)，或透過 [RSS](https://plugins.trac.wordpress.org/log/post-smtp/?limit=100&mode=stop_on_copy&format=rss)
訂閱[開發記錄](https://plugins.trac.wordpress.org/log/post-smtp/)。

## 變更記錄

#### 3.9.1 – April 01, 2026

 * TWEAK – Updated Emailit API to v2.
 * FIX – Added Header support in Maileroo.
 * FIX – Resolved qrstr class conflict.
 * FIX – Emailit API status handling (status code 201 was incorrectly marked as 
   failed instead of pending/successful).
 * FIX – Resolved fatal error: Class “HTMLPurifier_Config” not found.
 * FIX – Fixed SMTP2GO false positive response.

#### 3.9.0 – Mar 17, 2026

 * TWEAK – Updated the Setup Wizard UI for Mailers and improved related content.
 * FIX – Resolved REST error: rest_cookie_invalid_nonce (Cookie check failed – 403).
 * FIX – Added support for the pre_wp_mail function for custom implementations via
   functions.php.
 * FIX – Corrected an issue where submitted notification URLs were passed through
   esc_url, which escaped HTML entities (such as &) intended only for display.
 * FIX – Resolved an issue where the Post SMTP email logger did not display all 
   recipients.
 * FIX – Fixed missing line breaks in the mail log content.
 * FIX – Resolved the Initial Setup Wizard issue that allowed incorrect email acceptance
   on the wizard screen.
 * FIX – Addressed missing authorization for Authenticated (Subscriber+) Office 
   365 OAuth configuration overwrite.

#### 3.8.0 – Jan 20, 2026

 * NEW – Added [Sweego](https://www.sweego.io/) as an email service provider.
 * NEW – Introduced the “Send Test Notification” feature for Post SMTP failure alerts.
 * TWEAK – Added a hide option for wp_mail conflict notice.
 * FIX – PHPMailer with “Log Only” mode was sending emails.
 * FIX – Corrected improper call to the function _load_textdomain_just_in_time.
 * FIX – Fixed redirection issue that incorrectly navigated users to the Post SMTP
   settings page.

#### 3.7.0 – Dec 24, 2025

 * NEW – Added Mailtrap.io as an email service provider.
 * FIX – The PHPMailerException already exist.
 * FIX – Call to undefined method QRcode.
 * FIX – Emailit API Emails were going without From name

#### 3.6.3 – Dec 17, 2025

 * FIX – Escape email content.

#### 3.6.2 – Nov 24, 2025

 * IMPROVEMENT – Added PHP 8+ compatibility.
 * FIX – Added authorization checks related to OAuth token updates for authenticated
   users.

#### 3.6.1 – Oct 29, 2025

 * IMPROVEMENT: Removed GIF from the plugin to enhance performance and reduce load
   time.
 * IMPROVEMENT: Increased the request timeout for email sending to improve reliability
   and prevent timeouts.
 * FIX: Resolved a missing authorization vulnerability.
 * FIX: Addressed a WordPress error triggered when accessing the plugin settings
   page due to conflict with another theme/ plugin.

#### 3.6.0 – Oct 14, 2025

 * NEW – Added [Maileroo](https://postmansmtp.com/docs/mailers/how-to-setup-maileroo-with-post-smtp/)
   as an email service provider.
 * TWEAK – Enhanced Setup Wizard content for better user guidance.
 * TWEAK – Added a “Notify” button on the WordPress dashboard.
 * IMPROVEMENT – Updated multiple recipient view in email logs for better clarity.
 * FIX – Resolved undefined property issue in Post SMTP report after update.
 * FIX – Fixed “Limit Exceeded” error during Email DNS test.
 * FIX – Corrected failed message entries in logs.
 * FIX – Resolved issue with “Save Password” reappearing unexpectedly.
 * FIX – Fixed changelog display issue in Post SMTP.
 * FIX – Addressed PHPMailer BCC and CC handling issues.
 * FIX – Fixed host impersonation domain name issue.
 * FIX – Removed unnecessary console logs from the admin dashboard.

#### 3.5.0 – Sept 17, 2025

 * NEW – Added [Emailit](https://postmansmtp.com/smtp-integrations/Emailit/) email
   service providers.
 * TWEAK – Wizard Send Test Email disble button till the email is being sent.
 * TWEAK – Limited the scope of Gmail.
 * IMPROVEMENT – PHP 8+ compatibility added.
 * IMPROVEMENT – Dashboard widget UI improvement.
 * FIX – Fallback mailer was not working.
 * FIX – SendGrid attachments were not working in some cases.
 * FIX – Resending emails to multiple recipients was not working in some cases.
 * FIX – PHP warning was appearing in some cases.
 * FIX – PHP error was appearing in some cases Uncaught Error: Call to a member 
   function getFromEmailAddress().

#### 3.4.2 – Sept 01, 2025

 * Enhancement – Improved AJAX call security.
 * Improvement – PHP 8+ version compatibility.

#### 3.4.1 – Aug 20, 2025

 * TWEAK – Updated Plugin URI in header

#### 3.4.0 – Aug 18, 2025

 * NEW – Added [Resend](https://postmansmtp.com/smtp-integrations/resend/) email
   service providers.
 * UPDATED: Feedback SDK to the latest version.
 * TWEAK – Removed irrelevant notices from Post SMTP Wizard.
 * FIX – BCC/ CC fails with Sparkpost.
 * FIX – reply-to was not working with Gravit Forms notifications with SMTP2GO.

#### 3.3.0 – June 11, 2025

 * NEW – WP Dashboard Widget
 * NEW – Diagnostic Report Send Form
 * NEW – [Mailersend](https://postmansmtp.com/smtp-integrations/mailersend-smtp/)
   Mailer Integration
 * FIX – Added Validation In Domain Checker DNS, SPF, DMARC
 * FIX – LOCO Translate Issue
 * FIX – Email Summary Improvement
 * FIX – Vulnerability Fix.

#### 3.2.0 – May 19, 2025

 * New – Introducing Email Tester to test your email deliverability.
 * Fix – Removed id duplication in the Wizard.

#### 3.1.4 – Apr 08, 2025

 * FIX – To column in email logs was empty in some cases.

#### 3.1.3 – Mar 03, 2025

 * Enhancement: Email logs security enhancement.

#### 3.1.2 – Feb 24, 2025

 * Enhancement: Email logs security enhancement.

#### 3.1.1 – Feb 11, 2025

 * Fix: Raw HTML was sent when resending emails from the log section.
 * Fix: AJAX error with some Form plugins.

#### 3.1.0 – Feb 10, 2025

 * New: Added SendGrid EU support.
 * Optimization: Improved email reporting.
 * Fix: Translation warning was appearing in some cases.
 * Fix: Security enhancement.
 * Fix: Prevent From Name was not working, if Prevent From Email was not enabled.
 * Fix: Send Test was not appearing in Log Only mode.

#### 3.0.2 – Jan 27, 2025

 * Updated: Feedback SDK to the latest version.

#### 3.0.1 – Jan 14, 2025

 * Fix: Fixed the UI conflict.
 * Fix: Fixed MySQL warning.
 * Fix: Translation warning fixed.

#### 3.0.0 – Jan 07, 2025

 * New: Introduced all New Post SMTP Dashboard for users’ ease.
 * New: Introduced new SMTP socket SMTP2GO.
 * New: Introduced new Send Mail user interface.
 * New: Introduced Webhook, so you can add Webhook URL to get notified when an email
   is failed.

#### 2.9.14 – December 18, 2024

 * Tweak – WordPress 6.7 Transalation compatibility added.

#### 2.9.13 – December 10, 2024

 * Fix – Users were unable to regenerate [Mobile App](https://postmansmtp.com/post-smtp-mobile-app/)
   QR code in admin view.
 * Tweak – WordPress 6.7 Transalation compatibility added.

#### 2.9.12 – December 02, 2024

 * Enhancement – Regenerate QR Code Mobile Applicaion security enhancement in admin
   view reported by Patchstack.

#### 2.9.11 – November 21, 2024

 * Updated: Feedback SDK to the latest version.
 * Tweak: Failed email notification typo fixed.

#### 2.9.10 – November 19, 2024

 * Email logs search security enhancement in admin view reported by [Patchstack](https://patchstack.com/database/vulnerability/post-smtp/wordpress-post-smtp-plugin-2-9-9-sql-injection-vulnerability)

#### 2.9.9 – October 01, 2024

 * Tweak: Typo fixes.
 * Tweak: Improved user interface in wizard.
 * Fix: PHP deprecated warning on 8.x.
 * Fix: Emails count was not accurate in [Weekly email](https://postmansmtp.com/post-smtp-release-v2-9-0-smtp-mailer-and-email-health-report/)
   in some cases.

#### 2.9.8 – August 21, 2024

 * New: Added SendGrid EU support.
 * New: Added [pre_wp_mail](https://developer.wordpress.org/reference/hooks/pre_wp_mail/)
   filter.
 * Tweak: Sometimes Post SMTP was not detecting Post SMTP Pro.
 * Updated: Feedback SDK to the latest version.
 * Fix – Mailjet – Reply-To email was not working properly.

#### 2.9.7 – July 01, 2024

 * Fix: Logs filter was not working in [Post SMTP Mobile Application](https://postmansmtp.com/post-smtp-mobile-app/?utm_source=wp_org&utm_medium=changelog)

#### 2.9.6 2024-06-27

 * Tweak – Some strings were not translatable.
 * Fix – Compatibility added for old PHP Versions.
 * Fix – Notice: Only variables should be passed by reference.

#### 2.9.5 – 2024-06-25

 * Added: New Successful, Failed, and All email filter on email logs.
 * Added: Option to print email.
 * Updated: The user interface of settings tabs

#### 2.9.4 – 2024-05-29

 * Security Improvement: Sanitized SQL queries suggested by Wordfence team.

#### 2.9.3 – 2024-05-22

 * IMPROVEMENT – Email health report settings and template UI
 * FIX – Remove false email delivery count from the WordPress dashboard.

#### 2.9.2 – 2024-05-13

 * NEW – Added new filter post_smtp_postmark_content for developers ease.
 * UPDATED – Google Client SDK to latest version.
 * IMPROVEMENT – Site URL was missing in [Post SMTP Chrome Extension](https://chromewebstore.google.com/detail/post-smtp-notifications/npklmbkpbknkmbohdbpikeidiaekjoch).

#### 2.9.1 – 2024-04-22

 * Bug Fix: error appearing “syntax error, unexpected ‘)’”.

#### 2.9.0 – 2024-04-16

 * New – Added email health report
 * New – Added new socket/ email service SendPulse
 * Fix – AJAX call was being interrupted by register_setting when specific plugins
   were activated.

#### 2.8.13 – 2024-03-26

 * FIXED: Reverted last fix as it was conflicting in some cases.

#### 2.8.12 – 2024-03-26

 * FIXED: AJAX call was being interrupted by register_setting when specific plugins
   were activated.

#### 2.8.11 – 2024-01-19

 * Added link to the [new POST SMTP app for iOS](https://apps.apple.com/us/app/post-smtp/id6473368559)
   released.

#### 2.8.10 – 2024-01-18

 * Security Improvement: Added check to automatically remove any connected device
   with incomplete information.

#### 2.8.9 – 2024-01-11

 * Added compatibility for [InstaWP](https://www.instawp.com/)

#### 2.8.8 – 2024-01-01

 * Improvement: Added sanitization and escape functions in [POST SMTP Mobile App](https://postmansmtp.com/post-smtp-app/?utm_source=wp_org&utm_medium=changelog)
   QR code scanning window.

#### 2.8.7 – 2023-12-20

 * Improvement – added sanitization where missing to improve security
 * Improvement – added nonce where missing to improve security

#### 2.8.6 – 2023-12-07

 * Improvement – Changed banner placement for NEW mobile app for POST SMTP to improve
   UX.
 * Improvement – Tweaked dashboard UI for better usability.

#### 2.8.5 – 2023-11-23

 * Fix: In some cases, there was an issue disconnecting mobile application.

#### 2.8.4 – 2023-11-20

 * Fix: From name and emails, prevention settings were not being saved correctly
   in some cases in the new wizard.
 * Fix: In some sockets, the API keys getting saved were encoded in multiple layers.

#### 2.8.3 – 2023-11-17

 * Fix – Getting error when saving settings in some scenarios.
 * Improvement – Optimized QR code scanning module for [Post SMTP mobile app](https://postmansmtp.com/documentation/post-smtp-mobile-app/download-the-app-and-connect-with-plugin/?utm_source=wp_org&utm_medium=changelog)
   to avoid any scanning delays

#### 2.8.2 – 2023-11-14

 * Improvement – PHP < 7.3 compatibility added.

#### 2.8.1 – 2023-11-13

 * Fix – Other SMTP option in the wizard was not saving the settings correctly.

#### 2.8.0 – 2023-11-13

 * NEW – Introducing a NEW 3-step wizard to speed up the initial setup.
 * NEW – Added documentation within the wizard to ease out the setup
 * NEW – Added new socket/email service for [Mailjet](https://www.mailjet.com/)
 * NEW – Added support for default socket within wizard (you can use this option
   in case you want to use the logs functionality only)
 * Fix – Updated the error string as reported by @interaptivre

#### 2.7.2 – 2023-11-01

 * Improvement – Mobile App banner improvement.

#### 2.7.1 – 2023-11-01

 * NEW – Show Mobile App Notice on Post SMTP dashboard
 * Improvement – Improved SQL query to meet latest security standards
 * Improvement – Added patch to avoid script execution in log content.

#### 2.7.0 – 2023-10-26

 * NEW – Added support for POST SMTP app. [Visit documentation for more information](https://postmansmtp.com/documentation/post-smtp-mobile-app/download-the-app-and-connect-with-plugin/?utm_source=wp_org&utm_medium=changelog)
 * Fix – Raw HTML was sent when using ElasticEmail service.
 * Fix – Raw HTML was sent when resending emails from the log section.

#### 2.6.2 – 2023-10-19

 * Tested up to WordPress v6.3.2

#### 2.6.1 – 2023-10-03

 * Fix: Removed broken link from test email.
 * Improvement: Improved SQL query to meet latest security standards.
 * Improvement: Replaced sanitize_text_field() with intval() as suggested by WP 
   Scan team.

#### 2.6.0 – 2023-09-12

**NEW**

 * Elastic mail socket added
 * When resetting the plugin settings, the user can check to preserve logs from 
   getting removed
 * MainWP integration added. How-to instructions will be available publicly soon.

**FIX**

 * When using PHPMailer, the failed email log was not creating

**IMPROVEMENT**

 * Now, users can skip the banner from the dashboard.

#### 2.5.9.4 – 2023-08-29

 * API endpoint “SendinBlue” has been updated to “Brevo”

#### 2.5.9.3 – 2023-08-17

 * Minor Tweaks

#### 2.5.9.2 – 2023-08-16

 * Compatible & Tested up to WordPress v6.3

#### 2.5.9.1

**NEW**

 * Added option to refresh recent logs in the dashboard without loading the page.
 * Added new hooks in the code to make the functionality extendable.

#### 2.5.9 – 2023-07-18

**IMPROVEMENTS**

 * Improved email log popup content

**FIX**

 * Reverted support for HTML view in email content popup with proper checks to avoid
   CSS conflicts.

**NEW**

 * Added new filter post_smtp_before_view_log to extend log section view.

#### 2.5.8 – 2023-07-11

**IMPROVEMENTS**

 * Added function to escape backend email content popup HTML.
 * Added Failed/success labels for better visibility.
 * Displayed error message on hover and in the popup to simplify the interface and
   UX in the log section.
 * Updated Feedback SDK to the latest version

**FIXES**

 * Fix: Pagination was getting reset on resending emails.

#### 2.5.7 – 2023-06-21

**IMPROVEMENTS**

 * Enhance code quality and strengthen security measures.

#### 2.5.6 – 2023-06-08

**FIXES**

 * Critical error was being thrown when reseting the plugin.

#### 2.5.5 – 2023-05-29

**FIXES**

 * Some of logs were overriding log page CSS.

**IMPROVEMENTS**

 * Added title on log status for better user experience.
 * Translation string improvement.

#### 2.5.4 – 2023-05-24

**FIXES**

 * Logs were not created in some cases.

#### 2.5.3 2023-05-16

**FIXES**

 * Fixed E_WARNING appearing on activation in some cases.

#### 2.5.2 – 2023-05-12

**FIXES**

 * Fixed the issue where users were getting stuck in the initial migration stage.

**IMPROVEMENTS**

 * On completing the migration process, limit the notice to the logs section only
   to delete old logs.
 * Added an option to disable migration notifications for seven days on clicking
   the cross icon on notice.
 * Added a new feature that allows users to revert a migration. This way, they can
   retry the migration process or switch back to the old logs interface if required.
 * Added an option to skip the migration process for those who do not wish to transfer
   their old logs and want to switch to the new interface.
 * Added permission check before creating/writing error log during migration.

#### 2.5.1 – 2023-05-10

**NEW**

 * Added a link to learn more about migration.
 * Added a condition to initiate the migration and logging only if the new custom
   table exists.

**IMPROVEMENTS**

 * Improved database migration process to handle potential failures.

#### 2.5.0 – 2023-05-09

**NEW**

 * Introducing a new log section that is both lightweight and optimized, capable
   of accommodating millions of entries.
 * Added a migration wizard to help move existing logs to new custom tables from
   the old version.

#### 2.4.9 – 2023-04-27

**FIXES**

 * Uncaught Error: Cannot use object of type WP_Error as array
 * Fixed deprecation notice for PHP Version > 8.0

**IMPROVEMENTS**

 * Added condition for notice on how to fix broken emails

#### 2.4.8 – 2023-04-17

**Bug Fix**

 * Fixed deprecated functions on Php 8.x

#### 2.4.7 – 2023-04-10

**Improvements**

 * Updated feedback SDK to latest version
 * Added PHP 8.1 compatibility

#### 2.4.6 – 2023-03-27

**Bug Fixes**

 * Added new option in the settings to fix broken emails.

#### 2.4.5 – 2023-03-14

**Bug Fixes**

 * Reverted the fix to support minor PHP versions, impacting some other PHP versions.
 * NEW Filter post_smtp_incompatible_php added to fix the compatibility of minor
   PHP versions.

#### 2.4.4 – 2023-03-08

**Bug Fixes**

 * Resolved an issue where warnings were generated due to an array to string conversion.
 * Fixed a problem where CC and BCC recipients were not properly added when using
   SendInBlue.
 * Addressed an issue where multiple recipients using SendInBlue were receiving 
   emails individually instead of as a group.
 * Fixed an email formatting issue that occurred in certain PHP versions.
 * Corrected an issue where the friendly name feature was not functioning properly
   with SendInBlue.

#### 2.4.3 – 2023-02-27

**Bug Fixes**

 * Fix – Code 400 error appearing in some cases for SendGrid with cc headers

#### 2.4.2 – 2023-02-24

**Bug Fixes**

 * Email header request issue fixed for MailGun
 * Email attachment issue is fixed in SendGrid

#### 2.4.1 – 2023-02-22

**Bug Fixes**

 * Fixed parse error on Php 7.2

#### 2.4 – 2023-02-21

**Improvements**

 * Replaced Mandrill SDK with Endpoints
 * Replaced SendGrid SDK with Endpoints

#### 2.3.2 – 2023-01-06

**Bug Fixes**

 * Fixed error related to Reply-To appearing in some cases.

#### 2.3.1 – 2023-01-05

**Bug Fixes**

 * Fixed issues appearing in PostmanLogFields.php
 * Emails were getting broken in some cases

#### 2.3 – 2023-01-03

**Bug Fixes**

 * PHP errors appear in ajax requests in some cases.
 * Fixed comma breaking the From name in the log section
 * Reply-to Header not being added in some instances (Reported by @pierrehooker)

**Improvements**

 * Updated sender header as per RFC-2822
 * Added PHP 8 Compatibility
 * Updated Google API SDK
 * Replaced MailGun SDK with endpoints
 * Replaced SendInBlue SDK with Endpoints

#### 2.2.3 – 2022-12-27

**FIX**

 * Bug Fix – Support menu was disappearing in some cases

#### 2.2.2 – 2022-12-19

**FIX**

 * SendGrid was missing on wizard
 * PHP Warnings

#### 2.2.1 – 2022-12-13

**FIX**

 * Email template HTML was broken

#### 2.2 – 2022-12-08

 * **NEW**
 * Added New Socket/ Email Service Postmark
 * Added New Socket/ Email Service SparkPost
 * **IMPROVEMENTS**
 * SSRF Prevention
 * SQL Warning Removed
 * MailGun SDK Updated to Latest Version
 * Compatibility with BackupBuddy added
 * **FIXES**
 * Multisite Plugin Update
 * Additional Headers were not saved properly in some cases
 * Import Button was not working in some cases

#### 2.1.10 – 2022-10-10

 * **FIXES**
 * Avoid redirection to wizard on activation
 * Issue in resend emails
 * Made backend setting fields visible
 * **IMPROVEMENTS**
 * Email host message
 * Sendgrid message id to prevent spam emails

#### 2.1.9 – 2022-09-9

 * **FIX**
 * User Compatibility Fix
 * Unauthorized error on wizard

#### 2.1.8 – 2022-09-5

 * **FIX**
 * Php warnings

#### 2.1.7 – 2022-08-30

 * **FIX**
 * Server side request forgery

#### 2.1.6 – 2022-08-29

 * **FIX**
 * Server side request forgery

#### 2.1.5 – 2022-08-25

 * **FIX**
 * Updated email header to prevent email from being SPAM

#### 2.1.4 – 2022-08-18

 * **NEW**
 * Redirect the user to the setup wizard on activating the Plugin
 * Added action hook, “post_smtp_before_reset_plugin” to add an event before resetting
   plugin
 * Added action hook, “post_smtp_after_reset_plugin” to add an event after resetting
   plugin
 * Added notice to Grant Access after getting done with the wizard step to improve
   the UX
 * **FIXES**
 * Tweaks for PHP Version 8+ compatibility
 * Freemius Language FIX
 * Security Fix to avoid XSS from admin settings
 * Mailster support updated for the latest version (thanks to @evrpress)
 * Typo fix: defualt to default (thanks to @jsilvermist)
 * Updated email header to prevent email from being SPAM

#### 2.1.3- 2022-07-1

 * **FIX**
 * PHP Version Compatibility.

#### 2.1.2- 2022-06-30

 * **NEW**
 * Integrated SDK for Feedback and support.
 * Added “Start wizard” button in setup notification to optimize UX for the end-
   user.
 * **Improved**
    Removed unused code
 * **FIX**
    Less secure App Banner appearing in non-appropriate cases

#### 2.1.1.1 – 2022-06-15

 * **FIX**
 * Sendinblue email header

#### 2.1.1 – 2022-06-09

 * **FIX**
 * PHP Version Compatibility.

#### 2.1 – 2022-06-09

 * **NEW**
 * All New UI
 * Sendinblue API Integration

#### 2.0.27 – 2022-05-19

Add notice about Google Less Secure App.

#### 2.0.26 – 2022-04-22

 * **Bug Fixes**
 * Email header was broken in some cases.
 * **Improvements**
 * Minor UI improvement.
 * `llc` Hostname added in ZendMail.

#### 2.0.25 – 2022-04-06

 * **Bug Fixes**
 * WP 5.9 Compatibility Ballon UI issue.
 * Uncaught Error: Class PostmanAdminController not found.
 * Ajax error appearing due to Google API depreciated function.
 * **Improvements**
 * Code Optimization.
 * MIME version added to test mails to prevent emails from spam.
 * NEW Filter `postman_test_email_args` added to modify test email arguments.
 * NEW Action `wp_mail_succeeded` added to exectue on every success email delivery.

= 2.0.24 – 2022-02-13
 * Update: THE FUTURE OF Post SMTP – https://postmansmtp.com/
the-future-of-post-smtp/

= 2.0.23 – 2021-04-22
 * Fixed: `WP_Scripts::localize called incorrectly` message.

= 2.0.22 – 2021-02-14
 * Update: Chrome extension URL change * Fixed: Double save
when extension save to option

= 2.0.21 – 2021-02-11
 * Fixed: Security issue – nonce validation. * Fixed: Class
PostmanViewController not found * New: New wp-config.php constant to disable the
email logger = `POST_SMTP_CORE_MAIL_LOG`.

= 2.0.20 – 2021-01-19
 * Fixed: All reported office 365 issues. * New: Add link 
to Amazon SES Extension

= 2.0.19 – 2021-01-19
 * Fixed: All reported office 365 issues. * New: Add link 
to Amazon SES Extension

= 2.0.18 – 2021-01-17
 * New: Plugin Extensions

= 2.0.16 – 2020-12-13
 * Update: General Info

= 2.0.15 – 2020-08-12
 * Fixed: WordPress 5.5 compatibility (stable)

= 2.0.14 – 2020-08-11
 * Removed: WordPress 5.5 compatibility (bug)

= 2.0.13 – 2020-08-11
 * Fixed: WordPress 5.5 compatibility * Fixed: Email log filtering*
Fixed: Pushover notifications * New: Suggest solution for email delivery errors

= 2.0.12 – 2020-05-18
 * Updated: Readme file info

= 2.0.11 – 2020-02-25
 * Fixed: Slack notifications

= 2.0.10 – 2020-01-21
 * Fixed: HTML content type * Fixed: Sendgrid crash when has
duplicates recipients (bypass, Sendgrid issue). * Fixed: Few OAuth undefined notifications*
Fixed: Duplicate Emails – When you have notify and confirm (Ninja forms, etc..) *
Fixed: Logs wp_error convert

= 2.0.9 – 2020-01-13
 * Fixed: Notify on error bug – crash site * Fixed: From header

= 2.0.8 – 2020-01-12
 * Updated: Reply-To header bug

= 2.0.7 – 2020-01-12
 * Updated: Improve PHPMailer method. * Updated: Bug fixes.

= 2.0.6 – 2019-10-08
 * Updated: Bug fixes.

= 2.0.5 – 2019-09-26
 * New: You can now export logs to CSV. * Updated: Few notifications
errors, and minor improvements.

= 2.0.4 – 2019-08-27
 * Updated: More security.

= 2.0.3 – 2019-08-21
 * Fixed: A few security issues.

= 2.0.2 – 2019-05-19
 * Fixed: Sendgrid code fix. * Fixed: Default method (nothing
configured) will use the default mail on the server and not SMTP.

= 2.0.1 – 2019-05-15
 * New: Mailer Type – Added an option to send without overwrite
the ‘wp_mail’ function, better compability to WordPress delivery. hopefully will
be the default in the future. * Updated: Sendgrid API was upgraded and rewritten
to the new version. * Fixed: Message-Id header was missing on SMTP * Fixed: Email
logger optimization – better query for large amount of records. * Fixed: The localization
was fixed to match translate.wordpress.org translation system ( Thanks to Niels 
de Blaauw from Level-Level ). * Fixed: Code and optimization ( Thanks to Niels de
Blaauw from Level-Level ).

= 1.9.8 – 2019-02-18
 * New: a new from field to the fallback – Can’t trust the 
username as “from” value (email address).

= 1.9.7 – 2019-02-17
 * New: Fallback Feature – Configure a backup SMTP when emails
are failing. * New: WordPress Multisite compability – with global settings. * New:
Email Log capability – give other user cheking the logs. * Fixed: compatibility 
with mailster plugin * Fixed: Mandrill exception bug – Thanks to Niels de Blaauw
from Level-Level

= 1.9.6 – 2019-01-29
 * Added support for our new chrome notification extension.*
few fixes

= 1.9.5 – 2018-10-02
 * Added support for Mailgun Europe region. * Replace “buggy”
mime_content_type php function

= 1.9.4 – 2018-08-03
 The most stupid idea ever remove (auto security select)

= 1.9.3 – 2018-07-26
 Removed auto configure for port 25 (can be TLS)

= 1.9.2 – 2018-07-23
 Removed deprecated functions from 7.2 + comment unready feature

= 1.9.1 – 2018-07-22
 Syntx stupid mistake

= 1.9.0 – 2018-07-22
 * Better support for secure delivery * Support for constants
auth (inside wp-config), check the detailes our [Blog](https://postmansmtp.com/post-smtp-1-9-0-better-support-for-secure-delivery)*
Automatic encryption select base on the port input – 25, 465, 587, 2525

= 1.8.9 – 2018-04-24
 * Sendgrid bug

= 1.8.8 – 2018-04-24
 * file added to svn – contactform7

= 1.8.6 – 2018-04-24
 * Fix lockfile erros * Contact form 7 integration * PHP 5.6
requirement

= 1.8.5 – 2018-04-19
 * Remove Beta Woocommerce integration * Better check for WPML
less then version 3.9

= 1.8.4 – 2018-04-18
 * New: Multiple notification options to failed emails * Upgrade:
The Gmail code was upgraded and code change to support large attachments * Add: 
Fix release lock file error * Change: “Not configured…” message is now dismissible

= 1.8.3 – 2018-03-21
 * Fix: SendGrid API Call Structure (The previous try didn’t
work)

= 1.8.2 – 2018-03-21
 * Fix: SendGrid API Call Structure

= 1.8.1 – 2018-03-20
 * New: Sendgrid API & Client Version 6 * New: Add email log‘
send to’ column * Fix: fallback emails on hosting require the ‘-f’ parameter * Fix:
Using hostname insted of an IP * Fix: Remove mailgun test folder ( virustotal issue)*
Fix: Additional bugs collected from support tickets. * Added: added filters to from_name
and from_email filters (local connection) * change hostname extrect logic

= 1.8 – 2017-12-24
 * New: Mailgun API integration * New: New filter controls * 
New: WPML conflict fix * Fix: Minor old bugs

#### 1.7.10 – 2017-11-21

=
 * Fixed: bug while detecting transcript error

= 1.7.9 – 2017-11-20
 * Fixed: misspled false * Fixed: feedback form * Fixed: Some
localization strings * Removed: deprecated function * New: Option to input emails
when resend email * Added: explain message on email log filter

= 1.7.8 – 2017-11-17
 * = Menu Items grouping = * Fixed: IP detection error in some
web hosts * Fixed: Link open in new page attribute = _blank * Fixed: Replace deprecated
PHP 7 functions. * Updated: Validator TLD’s list * Added: Email log date and search
filter. * Added: Alert on sending error (Fallback to local mail) * Added: Email 
body preview (not raw)

= 1.7.7 – 2017-10-17
 * Fixed: Error sending files with sendgrid * Fixed: Wrong 
attachments format in Mandrill * Fixed: Wrong Sender Header in Mandrill

= 1.7.6 – 2017-10-17
 * Missing sendgrid files * Fixed: Localization slug

#### 1.7.5 – 2017-10-07

 * Fixed: security issue (XSS)
 * Fixed: Small bug with Google API

#### 1.7.2 – 2015-11-08

 * [[Ticket](https://wordpress.org/support/topic/having-troble-in-17-while-set-content-type-to-texthtml?replies=8)]–
   v1.7 ignores the content-type header set in the Additional Headers. Fixed.
 * [[Ticket](https://wordpress.org/support/topic/do-not-network-activate-17-on-multisite?replies=15)]–
   Fixed an issue where v1.7 admin screens crash for non-admin users when Post is
   not configured. Fixed a multiste issue where v1.7 site admins lose access to 
   their Post settings screen. Special thank-you to Domi2015 for giving me access
   for testing! 🙂
 * Localized jQuery Validation messages
 * Localized MyMail messages
 * Put the local translation files back, as WordPress on-line translations do not
   work as advertised

#### 1.7.1 – 2015-11-05

 * [[Ticket](https://wordpress.org/support/topic/cant-send-an-email-using-optimizepress?replies=8)]–
   the Optimizepress plugin calls wp_mail before the WordPress init hook, before
   Post is fully initialized, so I made a change to accomodate this behavior
 * [[Ticket](https://wordpress.org/support/topic/v17?replies=13)] – v1.7 admin screen
   may become inaccessible after upgrading. Fixed.
 * [[Ticket](https://wordpress.org/support/topic/inboundnow-html-e-mail-templates-are-not-being-recognized-with-170?replies=3)]–
   v1.7 breaks compatibility with [WordPress Leads](https://wordpress.org/plugins/leads/).
   Fixed.

#### 1.7.0 “Iliana” – 2015-11-03

 * Happy Halowe’en! 30,000 installations! – 2015-10-31
 * Integrated Mandrill API
 * Integrated SendGrid API
 * Language files have been removed from the plugin as [translations are now performed on-line](https://translate.wordpress.org/projects/wp-plugins/Post-smtp).
   If you are a non-English speaker please constribute!
 * Post commandeers email when activated and sends using the WordPress default of
   localhost:25 – this is for people who want to use it to diagnose email problems
   without configuring SMTP
 * Re-send failed e-mails from the Email Log screen
 * Added an internal ‘manage_Post_smtp’ capability for advanced management with,
   for example, [User Role Editor](https://wordpress.org/plugins/user-role-editor/)
 * [[Ticket](https://wordpress.org/support/topic/exportimport-settings-4?replies=2)][
   [Ticket](https://wordpress.org/support/topic/export-import-configuration?replies=1)]
   Added an import/export tab to the Advanced Configuration screen for those who
   want to duplicate settings between sites.
 * [[Ticket](https://wordpress.org/support/topic/gateway-error-invalid-envelope-from-mail-address?replies=9#post-7528068)]
   Added option to disable e-mail address validation
 * [[Ticket](https://wordpress.org/support/topic/error-665?replies=7#post-7581776)]
   Fix for fatal error when using a non-administrator in the admin menu.

#### 1.6.24 – 2015-09-10

 * 20,000 installations! – 2015-09-09
 * Translated into Greek, thank-you Michael Kotsarinis!
 * Diagnostic Test displays all the wp_mail-related hooks of active plugins and 
   themes
 * When validating e-mail addresses, Post will disclose which field has a validation
   issue in the error message
 * Default log entries bumped from 10 to 250
 * [[Ticket](https://wordpress.org/support/topic/for-your-consideration-backup-email-notification?replies=5)]
   Added nasty fake input field hack to prevent browsers from autofilling username/
   password fields.
 * [[Ticket](https://wordpress.org/support/topic/cf7-godaddy-emails-not-delivered?replies=5)]
   Added a warning to the Email Log for emails that have an empty subject line
 * [[Ticket](https://wordpress.org/support/topic/test-failed-but-meesage-is-sent?replies=12)]
   Test Email detects Ajax errors and displays them in the Status window
 * [[Ticket](https://wordpress.org/support/topic/missing-image-files-of-jquery-ui-1?replies=4)]
   Removed the references to images in Post’s copy of jquery-ui.css causing HTTP
   404
 * [[Ticket](https://wordpress.org/support/topic/test-email-keeps-on-failing?replies=17)]
   Fixed an Ajax name collision with the plugin [MemberPress](https://www.memberpress.com)
 * [[Ticket](https://wordpress.org/support/topic/message-body-not-send?replies=15)]
   Some sites can not handle International (UTF-8) characters in the Test Email.
   Fixed.
 * [[Ticket](https://wordpress.org/support/topic/notices-for-google-api-php-client?replies=10)]
   Fix for PHP Notice: Undefined offset: 1 in Post-smtp/Post/Post-Mail/google-api-
   php-client-1.1.2/autoload.php on line 22
 * [[Ticket](https://wordpress.org/support/topic/test-failed-but-meesage-is-sent?replies=13)]
   Silenced PHP warnings in Zend_Mail from ini_set

#### 1.6.23 – 2015-06-27

 * 10,000 installations! – 2015-06-27
 * 9,000 installations! – 2015-06-20
 * [[Ticket](https://wordpress.org/support/topic/conflict-with-bbpress-and-buddy-press-in-1622?replies=2)]
   Causes bbPress or Buddy Press to generate warning messages. Fixed.
 * [[Ticket](https://wordpress.org/support/topic/fatal-error-internal-zend-error-missing-class-information?replies=2#post-7092317)]
   User reported error “Fatal error: Internal Zend error – Missing class information”–
   Whoops, used ‘require’ PostState.php instead of ‘require_once’ PostState.php 
   which was causing errors. Fixed.
 * [[Ticket](https://wordpress.org/support/topic/error-send-mymail-email-marketing?replies=5)][
   [Ticket](https://wordpress.org/support/topic/how-configure-mymail-in-plugin?replies=6)]
   MyMail Newsletter Plugin for WordPress refuses to use wp_mail. I don’t want to
   make this a habit, but I’ve integrated Post with MyMail’s proprietary delivery
   mechanism.
 * [[Ticket](https://wordpress.org/support/topic/cant-send-error-500?replies=11#post-7103035)]
   Found an environment where the plugin’s call to new Exception was creating PHP
   Fatal errors. Fixed.
 * [[Ticket](https://wordpress.org/support/topic/error-calling-post-400-invalid-to-header?replies=4)]
   Perform validation on all email headers before …

## 商業版外掛

這個外掛為免費外掛，但另外提供付費商業升級版或技術支援。 [查看技術支援方式](https://objectsws.atlassian.net/servicedesk/customer/portal/16)

## 中繼資料

 *  版本 **3.9.1**
 *  最後更新 **2 週前**
 *  啟用安裝數 **400,000+**
 *  WordPress 版本需求 ** 5.6.0 或更新版本 **
 *  已測試相容的 WordPress 版本 **6.9.4**
 *  PHP 版本需求 ** 7.0 或更新版本 **
 *  語言
 * [Chinese (Taiwan)](https://tw.wordpress.org/plugins/post-smtp/)、[Dutch](https://nl.wordpress.org/plugins/post-smtp/)、
   [English (UK)](https://en-gb.wordpress.org/plugins/post-smtp/)、[English (US)](https://wordpress.org/plugins/post-smtp/)、
   [French (France)](https://fr.wordpress.org/plugins/post-smtp/)、[German](https://de.wordpress.org/plugins/post-smtp/)、
   [Japanese](https://ja.wordpress.org/plugins/post-smtp/)、[Korean](https://ko.wordpress.org/plugins/post-smtp/)、
   [Latvian](https://lv.wordpress.org/plugins/post-smtp/)、[Polish](https://pl.wordpress.org/plugins/post-smtp/)、
   [Portuguese (Brazil)](https://br.wordpress.org/plugins/post-smtp/)、[Romanian](https://ro.wordpress.org/plugins/post-smtp/)、
   [Russian](https://ru.wordpress.org/plugins/post-smtp/)、[Spanish (Chile)](https://cl.wordpress.org/plugins/post-smtp/)、
   [Spanish (Colombia)](https://es-co.wordpress.org/plugins/post-smtp/)、[Spanish (Ecuador)](https://es-ec.wordpress.org/plugins/post-smtp/)、
   [Spanish (Spain)](https://es.wordpress.org/plugins/post-smtp/)、[Spanish (Venezuela)](https://ve.wordpress.org/plugins/post-smtp/)、
   及 [Swedish](https://sv.wordpress.org/plugins/post-smtp/).
 *  [將這個外掛本地化為你的母語版本](https://translate.wordpress.org/projects/wp-plugins/post-smtp)
 * 標籤
 * [email](https://tw.wordpress.org/plugins/tags/email/)[email logs](https://tw.wordpress.org/plugins/tags/email-logs/)
   [gmail smtp](https://tw.wordpress.org/plugins/tags/gmail-smtp/)[office 365](https://tw.wordpress.org/plugins/tags/office-365/)
   [smtp](https://tw.wordpress.org/plugins/tags/smtp/)
 *  [進階檢視](https://tw.wordpress.org/plugins/post-smtp/advanced/)

## 評分

 4.7 星，滿分為 5 星

 *  [  473 個 5 星使用者評論     ](https://wordpress.org/support/plugin/post-smtp/reviews/?filter=5)
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 *  [  3 個 2 星使用者評論     ](https://wordpress.org/support/plugin/post-smtp/reviews/?filter=2)
 *  [  31 個 1 星使用者評論     ](https://wordpress.org/support/plugin/post-smtp/reviews/?filter=1)

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## 參與者

 *   [ Saad Iqbal ](https://profiles.wordpress.org/saadiqbal/)
 *   [ WPExperts.io ](https://profiles.wordpress.org/wpexpertsio/)

## 技術支援

最近 2 個月解決的問題:

     總計 13 個問題，已解決 11 個

 [檢視技術支援論壇](https://wordpress.org/support/plugin/post-smtp/)