Limit user registrations to domain names on a whitelist.
As of April 2026, WP Email Restrictions is a WordPress email plugin with 10 active installations and a 0/5 rating0. It has been downloaded 2.2K+ times in total. Requires WordPress 2.8.0+ and PHP false+. Available on WordPress.org since 2010. Last updated 16 years ago — may have compatibility concerns. Top alternative: WP Mail SMTP by WPForms – The Most….
For an internal or private WordPress installation you may want to place restrictions on
who can register a user account. This plugin allows the administrator to specify a
‘whitelist’ of domain names and restricts registrations to email addresses from those
whitelisted domains.
Please Note: This plugin is only tested on PHP5 and may not work on earlier versions.
Thanks to RedCat Co for sponsorship of initial development of this plugin
| WordPress | 2.8.0+ requiredTested up to 2.9.2 |
| PHP | false+ required |
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.