

Ban Subdomain Emails


A lot of registration spam comes from emails with a subdomain. Spammers control a domain such as and then attempt to register on your site with emails such as and This plugin simply blocks all registrations using a subdomain.

Reputable users will have a normal email address from a reasonable domain like,,,, etc.

There is no configuration and no setup. It simply just works. The plugin logs all blocked registrations so you can find potential false-positives. Find a link to this log file on the Plugins page where you activate/deactivate this plugin.

Contributors & Developers

“Ban Subdomain Emails” is open source software. The following people have contributed to this plugin.


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released 2016-04-26

  • First public version.