Simple SMTP Mailer

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

Author:Josh Mckibbin (profile at wordpress.org)
WordPress version required:6.0
WordPress version tested:6.8
Plugin version:1.1.0
Added to WordPress repository:18-08-2022
Last updated:28-04-2025
Rating, %:0
Rated by:0
Plugin URI:https://kibb.in/ssmtp
Total downloads:1 985
Active installs:20+
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The Simple SMTP Mailer 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.

Simple SMTP Mailer Settings

  • Host: The mail server (Defaults to smtp.gmail.com)
  • Username: The username used for connecting to the SMTP server
  • Password: The password used for connecting to the SMTP server
  • Port: The port to use when sending an email (587, 465 or 25. Defaults to 587)
  • Security: The type of encryption security to use when sending an email (TLS or SSL. Defaults to TLS)
  • Debug: Enable debugging

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.

define(
    'SSMTP_MAILER',
    array(
        'host' => emailhost.com,
        'username' => username,
        'password' => password,
        'port' => 25,
        'security' => 'SSL'
    )
);
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