Blair Williams

Enables you to optionally push users to your <a href="http://aweber.com" title="AWeber" rel="nofollow ugc">AWeber</a> email list when they signup through mingle… This plugin requires you to also be running <a href="https://wordpress.org/extend/plugins/mingle" title="Mingle" rel="ugc">Mingle</a>.
<h4>See Mingle In Action!</h4>
If you’re wondering what Mingle is — it is another WordPress plugin that easily turns your wordpress blog into a social network. You can now try Mingle out in our Mingle Community! Come be my friend at:
<a href="http://wpmingle.com" title="Mingle WordPress Community" rel="nofollow ugc">Mingle WordPress Community</a>

Mingle AWeber Signup

Enables you to optionally push users to your AWeber email list when they signup through mingle... This plugin requires you to also be running Mingle.

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.

Mingle AWeber Signup vs ElasticEmail Plugin