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Best failed plugins for WordPress

The most popular failed plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Send email to customer on cancelled order in WooCommerce leads with 400+ active installs. All 1 plugins tagged “failed” 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 failed plugins

  1. 1.
    Send email to customer on cancelled order in WooCommerce

    The most installed failed plugin, with 400+ active installs. Rated 3.4 from 7 reviews, last updated 7 years ago. Tested only up to WordPress 5.2.30.

All 1 plugins tagged “failed”