GoSMTP – SMTP for WordPress vs ActiveCampaign Postmark for WordPress (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
GoSMTP – SMTP for WordPress
500K+ active installs
Free
ActiveCampaign Postmark for WordPress
50K+ active installs
Free
Quick Verdict
As of April 2026, ActiveCampaign Postmark for WordPress has a higher user rating (4.7/5 from 30 reviews) while GoSMTP – SMTP for WordPress leads in active installations (500K+ vs 50K+). Both are free WordPress plugins. GoSMTP – SMTP for WordPress has accumulated 2.1M+ total downloads while ActiveCampaign Postmark for WordPress has 763K+. ActiveCampaign Postmark for WordPress has a higher support resolution rate (0% vs 0%).
Detailed Comparison
| Metric | GoSMTP – SMTP for WordPress | ActiveCampaign Postmark for WordPress | |
|---|---|---|---|
| Rating | 4.1/5 | ► | 4.7/5 |
| Total Reviews | 8 | ► | 30 |
| Active Installs | 500K+ | ◄ | 50K+ |
| Total Downloads | 2.1M+ | ◄ | 763K+ |
| Support Resolution | 0% | 0% | |
| Last Updated | 1 month ago | ◄ | 1 year ago |
| First Released | 2023 | 2011 | |
| Age | 3 years | 15 years | |
| WP Requires | 5.5+ | 5.3+ | |
| PHP Requires | 5.5+ | 7.0+ | |
| Business Model | Free | Free | |
| Latest Version | 1.1.9 | 1.19.1 |
Rating Breakdown
GoSMTP – SMTP for WordPress
ActiveCampaign Postmark for WordPress
Download Trends
Over the past 30 days, GoSMTP – SMTP for WordPress averaged approximately 1,686 daily downloads while ActiveCampaign Postmark for WordPress averaged 111.
Recent Reviews
GoSMTP – SMTP for WordPress Reviews
Works great 👍
A simple SMTP plugin that just works. it’s easy to setup and configure. Unlike a lot of the more popular SMTP plugins, it doesn’t clutter your dashboard with useless menus that are only there to upsel
Super
Make it works in 2 clicks. Thanks
Works perfectly
Reliable and does what is supposed to do.
ActiveCampaign Postmark for WordPress Reviews
Great plugin, no issues ever
This is extremely reliable, just like Postmark.
Stable and reliable
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!
Must have email plugin
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—Pos
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Frequently Asked Questions
Is GoSMTP – SMTP for WordPress or ActiveCampaign Postmark for WordPress more popular?
Which has better ratings — GoSMTP – SMTP for WordPress or ActiveCampaign Postmark for WordPress?
Are GoSMTP – SMTP for WordPress and ActiveCampaign Postmark for WordPress free?
Which plugin has better support — GoSMTP – SMTP for WordPress or ActiveCampaign Postmark for WordPress?
Which plugin is updated more frequently?
Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.