Josh Mckibbin

The <a href="https://kibb.in/ssmtp" rel="nofollow ugc">Simple SMTP Mailer</a> plugin allows you to easily configure WordPress to use SMTP instead of the PHP mail function.
This should only really be used in a development environment.
<h3>Simple SMTP Mailer Settings</h3>
<ul>
<li>Host: The mail server (Defaults to smtp.gmail.com)</li>
<li>Username: The username used for connecting to the SMTP server</li>
<li>Password: The password used for connecting to the SMTP server</li>
<li>Port: The port to use when sending an email (587, 465 or 25. Defaults to 587)</li>
<li>Security: The type of encryption security to use when sending an email (TLS or SSL. Defaults to TLS)</li>
<li>Debug: Enable debugging</li>
</ul>
All settings can be overridden by assigning array values to the SSMTP_MAILER constant in wp-config.php. This is useful for automating local deployment.
<pre><code>define(
 'SSMTP_MAILER',
 array(
 'host' => emailhost.com,
 'username' => username,
 'password' => password,
 'port' => 25,
 'security' => 'SSL'
 )
);
</code></pre>

Simple SMTP Mailer

Simplifies local development by configuring WordPress to use SMTP instead of the PHP mail() function

Saskia Teichmann

By default, MailPoet sends emails via PHP Mail, its premium MailPoet Sending Service, or services like Amazon SES or SendGrid. But there’s a catch: Some SMTP providers (like Gmail) aren’t supported, and email logging isn’t possible.
➡ This plugin fixes that. It ensures all MailPoet newsletters are sent via your chosen SMTP plugin, so your WordPress email settings apply to newsletters, too – without extra setup or extra costs.
<h3>🛠 Works with popular SMTP plugins like:</h3>
✅ WP Mail SMTP (by WPForms – the most widely used SMTP plugin) 
✅ FluentSMTP (lightweight, free, GDPR-friendly) 
✅ Post SMTP (supports OAuth for Gmail, Outlook, etc.) 
✅ Easy WP SMTP (simple & reliable) 
✅ MailerSend, Brevo (formerly Sendinblue), and more
<h3>🎯 Why use this plugin?</h3>
✔ Ensures MailPoet emails follow your SMTP settings 
✔ Works with Gmail & other SMTP providers MailPoet doesn’t support 
✔ Enables email logging via your SMTP plugin
<h3>⚠ Important notes:</h3>
<ul>
<li>Major MailPoet updates may require adjustments. </li>
<li>Some advanced MailPoet features (like bounce handling) may behave differently. </li>
</ul>
✅ Test your setup with MailPoet test emails and real newsletters to ensure everything runs smoothly!

SMTP Mail Control for MailPoet

The missing link between MailPoet and your SMTP plugin – for reliable email delivery!

Simple SMTP Mailer vs SMTP Mail Control for MailPoet