Best email authentication plugins for WordPress
The most popular email authentication plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Mailsure leads with 40+ active installs, ahead of RFS Email Verification for Gravity Forms (20+) and OLS 2FA (fewer than 10). All 5 plugins tagged “email authentication” 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 authentication plugins
- 1.
MailsureThe most installed email authentication plugin, with 40+ active installs. Only 1 review so far, last updated 2 years ago. Tested only up to WordPress 6.5.14.
- 2.
RFS Email Verification for Gravity Forms20+ active installs. Only 2 reviews so far, updated 8 months ago. Tested only up to WordPress 6.9.11.
- 3.
OLS 2FAFewer than 10 active installs. No reviews yet, last updated 1 year ago. Tested only up to WordPress 6.7.11.
- 4.
DMARCREPORT Domain Auth CheckerFewer than 10 active installs. No reviews yet, updated 8 months ago. Tested only up to WordPress 6.9.11.
- 5.
Password Less LoginFewer than 10 active installs. No reviews yet, updated 10 months ago. Tested only up to WordPress 6.8.12.
All 5 plugins tagged “email authentication”
Mailsure
Up in the last 7 days:33#21,814by corytrevor2 years ago
Test email sending, SPF, DKIM & DMARC
- Installs
- 40+
- Rating
- 5.0(1)
- Downloads
- 0/day
RFS Email Verification for Gravity Forms
Down in the last 7 days:28#27,651by Rafal Puczel of RFS WP8 months ago
OTP (One Time Password) Email Verification for Gravity Forms. Verify or authenticate your users. It’s also great way to avoid spam.
- Installs
- 20+
- Rating
- 3.0(2)
- Downloads
- 0/day
OLS 2FA
Up in the last 7 days:20,210#49,003by One Loop Studio1 year ago
OLS 2FA is a lightweight plugin that enhances your website's security by adding email two-factor authentication (2FA).
- Installs
- <10
- Rating
- –
- Downloads
- 0/day
DMARCREPORT Domain Auth Checker
Up in the last 7 days:631#68,542by DuoCircle LLC8 months ago
Check SPF, DMARC, BIMI, MTA-STS and TLS-RPT records for any domain. Embed email authentication checkers with a shortcode.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day
Password Less Login
Down in the last 7 days:2,758#70,852by Sadekur Rahman10 months ago
A powerful and easy-to-use WordPress plugin for passwordless and OTP-based login.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day