Best optin forms plugins for WordPress
The most popular optin forms plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Kolakube Email Forms leads with 10+ active installs, ahead of Kaddora Marketing Popups (fewer than 10). All 2 plugins tagged “optin forms” 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.
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Top 2 optin forms plugins
- 1.
Kolakube Email FormsThe most installed optin forms plugin, with 10+ active installs. Only 2 reviews so far, last updated 10 years ago. Tested only up to WordPress 4.8.34.
- 2.
Kaddora Marketing PopupsFewer than 10 active installs. No reviews yet, updated 2 weeks ago.
All 2 plugins tagged “optin forms”
Kolakube Email Forms
Down in the last 7 days:114#39,512by kolakube10 years ago
Connects to your email service provider in 2 easy steps so you can start displaying email signup form widgets throughout your site.
- Installs
- 10+
- Rating
- 5.0(2)
- Downloads
- 0/day
Kaddora Marketing Popups
Up in the last 7 days:3,726#52,104by kaddora17 days ago
Create and manage WordPress popups with a visual editor, display rules, forms, submissions, templates, and local analytics.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day