hq-web

Hq Mail helps you control outgoing email in WordPress.
Features: 
* Configure sender email and sender name. 
* Enable or disable overriding third-party mail settings. 
* Choose mail transport: PHP mail or SMTP. 
* Configure SMTP host, port, encryption, and authentication. 
* Send test emails from the admin page and view detailed send logs.
<h3>Development</h3>
Source code is included in the /src directory.

hq-mail

Configure WordPress email sending with PHP mail or SMTP, sender settings, and test email logging.

FolioVision

This plugin reconfigures the wp_mail() function to use SMTP instead of mail() and creates an options page that allows you to specify various options.
You can set the following options:
<ul>
<li>Specify the from name and email address for outgoing email.</li>
<li>Choose to send mail by SMTP or PHP’s mail() function.</li>
<li>Specify an SMTP host (defaults to localhost).</li>
<li>Specify an SMTP port (defaults to 25).</li>
<li>Choose SSL / TLS encryption (not the same as STARTTLS).</li>
<li>Choose to use SMTP authentication or not (defaults to not).</li>
<li>Specify an SMTP username and password.</li>
</ul>
Also adds subject to headers for SendGrid Activity Screen. SengGrid is a powerful SMTP service, however it’s Activity Log screen misses the message subjects. Our plugin adds that back in!

WP Mail SMTP SendGrid Edition

Based on WP Mail SMTP. Also adds subject for display on SendGrid Activity Screen.

hq-mail vs WP Mail SMTP SendGrid Edition