This plugin hasn’t been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.

CF7 SMTP Verify


The plugin extends Contact Form 7 validations with SMTP verification.


  • SMTP commands logging


Installing CF7 SMTP Verify Plugin

  • Download the plugin zip file.
  • Login to your WordPress Admin. Click on Plugins | Add New from the left hand menu.
  • Click on the “Upload” option, then click “Choose File” to select the zip file from your computer. Once selected, press “OK” and press the “Install Now” button.
  • Activate the plugin.

When activated, it will hook to any form that contains a mandatory email field and try to verify it.


What is the cost for the gateway plugin?

This plugin is a FREE download.


September 3, 2016
It installed fine and I integrated it with Contact Form 7. I was excited when it rejected the fake address I entered, but then it also rejected my own email address on my domain and my Gmail address.
Read all 2 reviews

Contributors & Developers

“CF7 SMTP Verify” is open source software. The following people have contributed to this plugin.


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Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.



  • Excluded non-queryable domains.


  • Stopped using the REST-DNS Project API.


  • First Release.