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SMTP Mailer

Configure a SMTP server to send email from your WordPress site. Configure the wp_mail() function to use SMTP instead of the PHP mail() function.

SMTP Mailer plugin allows you to configure a mail server which handles all outgoing email from your website. It takes control of the wp_mail function and use SMTP instead.

SMTP Mailer Settings

  • SMTP Host: Your outgoing mail server (e.g.
  • SMTP Authentication: Whether to use SMTP authentication when sending an email (True/False). If you choose to authenticate you will also need to provide your username and password.
  • SMTP Username: The username to connect to your SMTP server.
  • SMTP Password: The password to connect to your SMTP server.
  • Type of Encryption: The encryption to be used when sending an email (TLS/SSL/No Encryption. TLS is recommended).
  • SMTP Port: The port to be used when sending an email (587/465/25). If you choose TLS the port should be set to 587. For SSL use port 465 instead.
  • From Email Address: The email address to be used as the From Address when sending an email.
  • From Name: The name to be used as the From Name when sending an email.

SMTP Mailer Test Email

Once you have configured the settings you can send a test email to check the functionality of the plugin.

  • To: Email address of the recipient.
  • Subject: Subject of the email.
  • Message: Email body.

Known Compatibility

SMTP Mailer should work with any plugin that uses the WordPress Mail function. However, It has been tested with the following form and contact form plugins:

  • Contact Form 7
  • Jetpack Contact Form
  • Visual Form Builder
  • Fast Secure Contact Form
  • Formidable Forms
  • Contact Form by BestWebSoft

For detailed setup instructions please visit the SMTP Mailer plugin page.

Author naa986
Contributors naa986
Tags email, mail, Mailer, phpmailer, smtp, wp_mail

For screenshots please visit the SMTP Mailer plugin page

  1. Go to the Add New plugins screen in your WordPress Dashboard
  2. Click the upload tab
  3. Browse for the plugin file ( on your computer
  4. Click "Install Now" and then hit the activate button


  • SMTP Mailer now supports the "wp_mail_failed" hook which fires after a phpmailerException is caught.
  • Added a new option to bypass this error on some servers where the SSL certificate is not properly configured - Warning: stream_socket_enable_crypto(): SSL operation failed with code 1. OpenSSL Error messages: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed.


  • First commit

Can I send email via SMTP from my website using this plugin?


Version 1.0.2

Requires WordPress version: 4.7 or higher

Compatible up to: 4.7.2

Last Updated 23 Dec 2016

Date Added: 20 Dec 2015

Plugin Homepage


4.8 stars
23 ratings


Not Enough Data

Works: 0
Broken: 0

Probably Works.
Considering downloads, would expect problems reported.