Intercept emails sent with wp_mail() into flexible mail queue for sending emails, convert plain text emails to HTML, email log, and more.

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<p>The plugin adds a mail queue system that can intercept all the emails sent through the <code>wp_mail</code> function, and depending on the predefined rules (number of recipients), sent the email into the queue, with each recipient getting their email. On top of that, the plugin can process all plain text emails and wrap them in the HTML, and send them as HTML, with options to customize the template and various other aspects.</p>
<h4>How the plugin works</h4>
<p>The central part of the plugin, called ‘Mailer,’ controls the process.</p>
<ul>
<li>Intercept every <code>wp_mail</code> call</li>
<li>If needed, wrap email in HTML</li>
<li>Determine the number of recipients</li>
<li>If eligible, add each recipient email into the queue</li>
</ul>
<p>Process of turning plain text into HTML emails, support all emails sent through wp_mail, even if they don’t end in the queue. This can turn all WordPress system emails (registration, password reset…) into HTML emails and you can choose between predefined HTML templates, or register own templates via filter.</p>
<p>Queue works through the CRON, as a background job, and you can configure how many emails to send in a batch, with the timeout setting to prevent PHP timeout breaking the sending process.</p>
<h4>Email Sending</h4>
<p>Emails are sent using PHPMailer built into WordPress. But, the plugin has additional options to control the queue sending process and the wp_mail sending process.</p>
<ul>
<li>Email sending engine based on PHPMailer class</li>
<li>PHPMailer options to use SMTP for sending emails</li>
<li>Customize email From for all emails passed through <code>wp_mail</code></li>
<li>Customize email From, Reply, and Sender for all emails sent through the queue</li>
</ul>
<h4>Email Logging</h4>
<p>The plugin includes an advanced email log.</p>
<ul>
<li>Custom database tables to store logs, made for performance</li>
<li>Store all relevant data for each email, including a list of attachments</li>
<li>Email log panel with filters for logged emails</li>
<li>Preview popup displaying all logged email details</li>
<li>Preview popup shows the full HTML email part preview</li>
<li>Retry sending any failed emails through the queue</li>
</ul>
<h4>Security related features</h4>
<p>The plugin will attempt to strip malicious content from intercepted email, and sanitize the email plain text before generating HTML version, with the option to control the scope of the HTML tags to allow. HTML from subject will be striped. Emails stored in the log will be additionally sanitized, and on display, email content will be again escaped or run through KSES to avoid issues.</p>
<h4>Other plugin features</h4>
<ul>
<li>Options to pause wp_mail and queue operations</li>
<li>Dashboard: an overview of the queue (including the last run) statistics</li>
<li>Dashboard: an overview of the overall mailer statistics</li>
<li>Dashboard: additional boxes with various other information</li>
<li>Automatic cleanup of all successfully sent and/or failed emails</li>
<li>Logging of the errors for each email send through the queue</li>
<li>Developers friendly with various actions and filters for extra control</li>
<li>Support for intercepting bbPress subscription notifications emails</li>
<li>Support for the BuddyPress mail system</li>
<li>Option to set BuddyPress to use WordPress wp_mail() function</li>
<li>Track email types from emails sent by WordPress, bbPress and more</li>
<li>Tools to test sending of emails and adding to the queue</li>
</ul>
<h4>Upgrade to GD Mail Queue Pro</h4>
<p>Pro version contains many more great features:</p>
<ul>
<li>REST API based email sending engines</li>
<li>REST API Engine: SendGrid</li>
<li>REST API Engine: Amazon Web Services SES (through free addon)</li>
<li>REST API Engine: Gmail (through free addon)</li>
<li>REST API Engine: Mailgun (through free addon)</li>
<li>REST API Engine: Mailjet (through free addon)</li>
<li>REST API Engine: SendInBlue (through free addon)</li>
<li>PHPMailer third-party SMTP services support</li>
<li>PHPMailer SMTP Service: Amazon Web Services SES</li>
<li>PHPMailer SMTP Service: Mailgun</li>
<li>PHPMailer SMTP Service: Mailjet</li>
<li>PHPMailer SMTP Service: Mandrill</li>
<li>PHPMailer SMTP Service: PostMark</li>
<li>PHPMailer SMTP Service: PepiPost</li>
<li>PHPMailer SMTP Service: SendGrid</li>
<li>PHPMailer SMTP Service: SendInBlue</li>
<li>PHPMailer SMTP Service: SendPulse</li>
<li>PHPMailer SMTP Service: SparkPost</li>
<li>Panel to show everything currently in queue</li>
<li>Email Notifications with daily and weekly statistics</li>
<li>Email Notifications with daily and weekly errors logged</li>
<li>Safe staging support with email redirection</li>
<li>HTMLfy support for uploading logos</li>
<li>Improved dashboard with various control buttons</li>
<li>Improved log with the email role-based filtering</li>
<li>Tool to preview HTML template</li>
</ul>
<p>With more features on the roadmap exclusively for the Pro version.</p>
<ul>
<li>More information about <a href="https://plugins.dev4press.com/gd-mail-queue/" rel="nofollow ugc">GD Mail Queue Pro</a></li>
<li>Compare <a href="https://plugins.dev4press.com/gd-mail-queue/articles/lite-vs-pro/" rel="nofollow ugc">Free vs. Pro Plugin</a></li>
</ul>
<h4>More Information and Support</h4>
<ul>
<li>More information about <a href="https://plugins.dev4press.com/gd-mail-queue/" rel="nofollow ugc">GD Mail Queue</a></li>
<li>Support and Knowledge Base for <a href="https://support.dev4press.com/kb/product/gd-mail-queue/" rel="nofollow ugc">GD Mail Queue</a></li>
</ul>
<h4>Important</h4>
<ul>
<li>The plugin only works with the default WordPress <code>wp_mail</code> function that uses the <code>PHPMailer</code> object.</li>
<li>The plugin doesn’t replace <code>wp_mail</code> or PHPMailer and uses default function and class built into WordPress.</li>
<li>It is not advisable to use this plugin and some other plugin that manipulates WordPress <code>PHPMailer</code> object.</li>
<li>Plugin doesn’t support plugins replacing the <code>wp_mail</code> function (Sendgrid, WP Offload SES, and similar).</li>
</ul>


GD Mail Queue

Great plugin. As a thank you, I translated it into Russian. Later I saw that the premium version has such a package. Let those who do not have the premium version use it

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