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Best email check plugins for WordPress

The most popular email check plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. MailCheck.co leads with 10+ active installs, ahead of WP Valid Email (10+) and All In One Form Verification (10+). All 5 plugins tagged “email check” are below, with figures from WordPress.org that update every day.

Installs aren’t everything: a recent release, a “Tested up to” that matches the current WordPress, and support threads that get resolved show a plugin is looked after. Open any plugin for its downloads, rank history and alternatives.

Research this niche or see all plugins.

Top 5 email check plugins

  1. 1.
    MailCheck.co

    The most installed email check plugin, with 10+ active installs. Only 1 review so far, last updated 3 years ago. Tested only up to WordPress 6.0.18.

  2. 2.
    WP Valid Email

    10+ active installs. Only 1 review so far, last updated 11 years ago. Tested only up to WordPress 4.1.42.

  3. 3.
    All In One Form Verification

    10+ active installs. Only 1 review so far, last updated 5 years ago. Tested only up to WordPress 5.7.21.

  4. 4.
    SpoofMail

    10+ active installs. No reviews yet, last updated 14 years ago. Tested only up to WordPress 3.4.2.

  5. 5.
    Server Mail Check

    10+ active installs. No reviews yet, last updated 9 years ago. Tested only up to WordPress 4.3.0.

All 5 plugins tagged “email check”