cubefeed

The problem: SMTP email delivery by some hosting providers can be extremely slow. This plugin reconfigures the wp_mail() function to send email using HTTPS (via Elasticemail API) instead of SMTP and creates an options page that allows you to specify various options.
Plugin Settings Options:
<ul>
<li>Enable or Disable Plugin.</li>
<li>Elasticemail API username</li>
<li>Elasticemail assigned API Key</li>
<li>Elasticemail REST API URL</li>
<li>Your account channel variable(optional)</li>
</ul>

ElasticEmail Plugin

Reconfigures the wp_mail() function to send email using HTTPS (via Elasticemail) instead of SMTP and creates an options page to manage the settings.

Serghei Iakovlev

iclanzan

This plugin configures WordPress to use a SMTP server when sending emails instead of the default PHP <code>mail()</code> function.
It also creates a settings page where you can enter the SMTP server details and authenticatin credentials if needed.

SMTP

Allows you to configure and use a SMTP server (such as Gmail) for sending emails.

ElasticEmail Plugin vs SMTP