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Best WordPress mailbox plugins for WordPress

The most popular WordPress mailbox plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. MFS MAILBOX leads with 10+ active installs. All 1 plugins tagged “wordpress mailbox” 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 1 WordPress mailbox plugins

  1. 1.
    MFS MAILBOX

    The most installed WordPress mailbox plugin, with 10+ active installs. Only 2 reviews so far, last updated 13 years ago. Tested only up to WordPress 3.4.2.

All 1 plugins tagged “wordpress mailbox”