transilvlad

All webmasters experience the problem of their emails landing in their users spam folders, including our own! 
So we decided to develop a simple solution to fix this wide-spread annoyance. 
After a long development period, we have produced an effective method of sending emails which complies 
in full with all guidelines and security requirements of email providers such as Google, Yahoo & MSN.
<h3>Markdown</h3>
<ul>
<li>Your emails will no longer be marked as SPAM.</li>
<li>If your emails do not even arrive to Yahoo! or MSN with Xmail they will.</li>
<li>This is the way Google, Yahoo! and MSN best like emails to come to them.</li>
</ul>

Xmail – The Right Way

Replaces wp_mail and sends email the right way so it does not get flagged as SPAM.

hildende

Birmania

This plugin adds emails to a mailing queue instead of sending immediately. This speeds up sending forms for the website visitor and lowers the server load. 
Emails are stored as files which are deleted after emails are sent.
You can send all outgoing emails via an SMTP server or (the WordPress standard) PHP function <a href="http://php.net/manual/en/function.mail.php" rel="nofollow ugc">mail</a>, and either use <a href="https://codex.wordpress.org/Function_Reference/wp_cron" rel="nofollow ugc">wp_cron</a> or a cronjob (if your server/hoster supports this) to process the queue.
Plugin requires PHP 5.4 or above.
Tools:
<ul>
<li>You can send test mails to test your setup.</li>
<li>You can process the mailing queue manually instead of waiting for cronjob.</li>
</ul>
Supervisors: 
* You can display basic informations about mail processing performances 
* You can display the mailing queue in the backend to see emails that will be sent with next processing. 
* You can display the invalid mails and delete or retry them. 
* You can display the sent mails and delete them.
Coming soon:
<ul>
<li>Storing mailing data in database instead of files.</li>
<li>Using plugin for SMTP mails without using mailing queue.</li>
</ul>
Feel free to suggest features or send feedback in the <a href="https://wordpress.org/support/plugin/smtp-mailing-queue" rel="ugc">support section</a>, via <a href="mailto:antoine.brultet@gmail.com" rel="nofollow ugc">email</a> or by creating a pull request on <a href="https://github.com/Birmania/smtp-mailing-queue" rel="nofollow ugc">github</a>.

SMTP Mailing Queue

Add emails to a mailing queue instead of sending immediately to speed up sending forms for the website visitor and lower server load.

Xmail – The Right Way vs SMTP Mailing Queue