<p>This plugin enhances the security and stability of your WordPress installation by delaying and controlling wp_mail() email submissions through a managed queue.</p>
<p>If your site exhibits unusual behavior — such as a spam bot repeatedly submitting forms — you will be alerted immediately.</p>
<ul>
<li>Intercepts wp_mail() and places outgoing messages in a queue</li>
<li>Configure how many emails are sent and at what interval</li>
<li>Log all queued email submissions</li>
<li>Receive alerts when the queue grows unexpectedly</li>
<li>Receive alerts when WordPress is unable to send emails</li>
</ul>


Mail Queue

Take control of emails sent by WordPress. Queue outgoing emails and get notified instantly if your website is trying to send too many emails at once!

Jeffrey Schutzman

<p>Send mail using SMTP without exceeding the the rate allowed by your mail provider(s). Mail can be sent using multiple<br />
user logins/passwords to give fault tolerance and make each mail message somewhat unique so that it is less likely to<br />
be flagged as SPAM/UCE by either your or the downstream mail providers.  Messages can be automatically resent when<br />
the plugin detects Non-delivery messages (NDRs) returned from mail sent by the plugin.</p>
<p>Email can be throttled per outbound SMTP account.  Limits can be set for maximum number of recipients per hour and per day.</p>
<h4>Features</h4>
<ul>
<li>Sends mail via SMTP </li>
<li>Send mail no faster than the configured number of recipients per hour and day.  Keeps you in complience with your providers email sending limits.</li>
<li>Configure multiple SMTP accounts to use for sending messages (Gmail, MSN, Go-daddy, etc)</li>
<li>Process non-delivery messages and automatically resend messages</li>
<li>Keep record of sent mail messages so that you can prove to your provider you didn’t send SPAM</li>
<li>Automatically stops sending email when errors encountered, auotmatically restarts after configured period of time </li>
<li>Mail sending statistics display</li>
</ul>
<h4>Benefits</h4>
<ul>
<li>Using multiple email accounts makes it less likely that your email will be incorrectly flagged as SPAM by downstream providers </li>
<li>Use in combination with other email newsletter, sending and formatting WordPress plug-ins </li>
<li>Reduces non-delivered mail due to invalid SPAM flagging or exceeding near or downstream provider sending/receiving limits  </li>
</ul>
<p>More information can be found on our <a href="http://www.pyebrook.com/mail-queues" rel="nofollow ugc">web site</a>.</p>
<h3>Notes</h3>
<h4>Non-Delivery Processing</h4>
<p>Non-Delivery (NDR) messaging processing note: plugin should recognize common non-delivery formats.  But, because non-deliveries are free form, and can be highly customized or specifically localized the plugin may not recognize the message.  If you provide a sample non-delivery message we can make the plug-in a little smarter.</p>


Mail Queues by PBCI

Queue, Throttle, Send SMTP email through multiple providers.  Automatic re-send when non-delivery received.

Mail Queue vs Mail Queues by PBCI