The officially-supported ActiveCampaign Postmark plugin for Wordpress.
As of April 2026, ActiveCampaign Postmark for WordPress is a WordPress smtp plugin with 50K+ active installations and a 4.7/5 rating from 30 reviews. It has been downloaded 763K+ times in total. Requires WordPress 5.3+ and PHP 7.0+. Available on WordPress.org since 2011. Last updated 1 year ago — may have compatibility concerns. Downloads are down 11% this week. Support resolution rate: 0%. Top alternative: WP Mail SMTP by WPForms – The Most….
If you’re still sending email with default SMTP, you’re blind to delivery problems! ActiveCampaign Postmark for WordPress enables sites of any size to deliver and track WordPress notification emails reliably, with minimal setup time and zero maintenance.
If you don’t already have a Postmark account, you can get one in minutes, sign up at https://postmarkapp.com
Check out our video on how to set up the Postmark for WordPress plugin here.
Can I use the Postmark for WordPress plugin with Gravity Forms?
How do I send with Ninja Forms and Postmark for WordPress?
How do I send with Contact Form 7 and Postmark for WordPress?
Can I use the Postmark for WordPress plugin with Divi contact forms?
This is extremely reliable, just like Postmark.
I switched to using Postmark for a few of my websites email delivery over a year ago, and have not had any issues since. Super reliable, and good support too!
Postmark (both the service and this plugin) has resolved and prevented so many headaches. It is an absolute time saver. The customer service is fast, responsive, and helpful. I’ve tried the others—Postmark is in a class of its own.
This plugin just works and I use it on all my sites. Highly recommended.
I rely on Postmark for transactional email on all our client sites. It’s been a reliable and lightweight performer for ages.
We use this on 50+ sites. Works. Period.
| WordPress | 5.3+ requiredTested up to 6.7.5 |
| PHP | 7.0+ required |
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.