Best outlook SMTP plugins for WordPress
The most popular outlook SMTP plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. WPO365 leads with 1K+ active installs, ahead of VR SMTP Mailer (10+). All 2 plugins tagged “outlook smtp” 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 outlook SMTP plugins
- 1.
WPO365The most installed outlook SMTP plugin, with 1K+ active installs. Rated 4.9 from 26 reviews, last updated 2 years ago. Tested only up to WordPress 6.1.16.
- 2.
VR SMTP Mailer10+ active installs. No reviews yet, updated 2 months ago.
All 2 plugins tagged “outlook smtp”

WPO365
Down in the last 7 days:2#5,216by Marco van Wieren2 years ago
IMPORTANT - Please choose the WPO365 | MICROSOFT 365 GRAPH MAILER plugin instead. This plugin is no longer supported and does not receive updates.
- Installs
- 1K+
- Rating
- 4.9(26)
- Downloads
- 16/day

VR SMTP Mailer
Down in the last 7 days:111#28,565by Vinod Ram2 months ago
SMTP or Microsoft Graph OAuth mail for WordPress. Full wp_mail replacement with logging, queue, and SMTP/email test tools.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day