BaiatuLuTata

This plugin overrides the default WordPress email sending function with MailGuns’s Mail Send API.
Key Features:
<ul>
<li>Toggle Email Override for Mailgun on/off</li>
<li>Enter your Mailgun API key and domain</li>
<li>Customize the “From” email and name</li>
<li>Send a test email directly from the settings page</li>
<li>Clean and native WordPress admin UI</li>
</ul>
<h3>External Services</h3>
This plugin integrates with the <a href="https://www.mailgun.com/" rel="nofollow ugc">Mailgun</a> email delivery service to send outgoing emails via its API instead of the default <code>wp_mail()</code> function.
When enabled, the plugin communicates with the following Mailgun API endpoint: https://api.mailgun.net/v3/YOUR_DOMAIN/messages
Data sent to Mailgun includes: 
– Sender name and email 
– Recipient email(s) 
– Email subject 
– Message body (text or HTML) 
– Optional headers (Cc, Bcc)
The plugin requires a valid Mailgun API key and domain to function. These credentials are stored in your WordPress database and used only to authenticate API requests to Mailgun.
Privacy Notice: 
By using this plugin, you agree to Mailgun’s <a href="https://www.mailgun.com/terms/" rel="nofollow ugc">Terms of Service</a> and <a href="https://www.mailgun.com/privacy-policy/" rel="nofollow ugc">Privacy Policy</a>. Ensure your use of Mailgun complies with local privacy laws and your own data protection policies.

Email Override for Mailgun

Replaces WordPress wp_mail() with MailGun's API. Adds a settings page to manage API key, sender info, and test email functionality.

Shaharia Azam

Currently there are lots of plugins available to integrate 3rd party email gateway provider in your WordPress site. It seems that for every provider you need to install 
different plugin. From that use case scenario, this WP Mail Gateway plugin can be your All in One email solutions for WordPress.
With this one plugin, you can integrate tons of third party email service provider.
WP Mail Gateway can be your complete email solution plugin for your WordPress website. Send mail via multiple email gateway provider from your WordPress. 
Supports various mail provider. i.e: Amazon SE, Mailgun, Mandrill, Mailjet, Postmark, Sendgrid, SendinBlue, SMTP etc.
Currently we support the following email gateway provider. We are regularly updating the list.
Supported Email Gateway Provider:
<ul>
<li>Amazon SES</li>
<li>Mailgun</li>
<li>Mandrill</li>
<li>Mailjet</li>
<li>Postmark</li>
<li>Sendgrid</li>
<li>SendinBlue</li>
<li>SMTP</li>
</ul>

WP Mail Gateway

It's worth to install this plugin. In my case actually I have several email gateway provider for various reason (costing, spam protection, better deliverability, transactional).
So I can switch to my preferred email gateway provider for my Wordpress site whenever I want. I added and configured multiple provider and I can select which one will Wordpress use for email delivery. Simple and perfect!

It works. Superb! I can switch email gateway as I wish

This is the best plugin to use with Aws SES.
Contrary to what was mentioned, I found nothing wrong with the source code indicating some kind of scam.
Keep updating the plugin, note 10!

The best to use with AWS SES!

Send email from your Wordpress site via SMTP and other 3rd party mail gateway provider. Current it supports Amazon SES, Mailgun, Mandrill, Mailjet, Po …

Email Override for Mailgun vs WP Mail Gateway