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.

BP Blacklist Signup by Email Domain


User registration spam is prevalent in BuddyPress.

One way to dramatically decrease signup spam is to restrict the email address domains that users can sign up with.

WordPress multisite has a native option called “Limited Email Registrations”. But this option requires you to enter the full email domain. For example, if you only wanted to allow .edu email addresses to register, this is not possible.

This plugin restricts registrations to the email domains that you are not specified in the blacklist and works in WordPress single-site and multi-site.

Plugin is a fork of r-a-y’s BP Restrict Signup by Email Domain.

Tested on BuddyPress 2.5, but should work all the way down to BuddyPress 1.6.



  • Download, install and activate this plugin.
  • Login to the WP admin dashboard and navigate to the “Settings > BuddyPress” page. Next, click on the “Options” tab. (If you’re using BuddyPress 2.4 or lower, click on the “Settings” tab).
  • You should see a new section called “Email Address Restrictions”.
  • Under “Blacklist Email Domains”, list the email domains that are not allowed.

eg. If you type in:


This will prevent users with .edu, .org, or email addresses from registering on the site.

Any other email address will be allowed registration.

  • To customize the error message and registration blurb, edit the other two fields.


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Contributors & Developers

“BP Blacklist Signup by Email Domain” is open source software. The following people have contributed to this plugin.




  • 11/02/2021

  • Fix: Corrected require statement for the admin file.


  • 10/02/2021

  • Fix: Translation improvements


  • 11/12/2018

Fix: Fix for substr_compare start location error

1.0.0 =
* Initial public release