ActiveCampaign Postmark for WordPress vs MailerSend – Official SMTP Integration (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
ActiveCampaign Postmark for WordPress
50K+ active installs
Free
MailerSend – Official SMTP Integration
2.0K+ active installs
Free
Quick Verdict
As of April 2026, ActiveCampaign Postmark for WordPress has a higher user rating (4.7/5 from 30 reviews) and leads in active installations (50K+ vs 2.0K+). Both are free WordPress plugins. ActiveCampaign Postmark for WordPress has accumulated 763K+ total downloads while MailerSend – Official SMTP Integration has 21K+.
Detailed Comparison
| Metric | ActiveCampaign Postmark for WordPress | MailerSend – Official SMTP Integration | |
|---|---|---|---|
| Rating | 4.7/5 | ◄ | 2.8/5 |
| Total Reviews | 30 | ◄ | 12 |
| Active Installs | 50K+ | ◄ | 2.0K+ |
| Total Downloads | 763K+ | ◄ | 21K+ |
| Support Resolution | 0% | N/A | |
| Last Updated | 1 year ago | ► | 2 months ago |
| First Released | 2011 | 2021 | |
| Age | 15 years | 5 years | |
| WP Requires | 5.3+ | 5.7+ | |
| PHP Requires | 7.0+ | 7.2.5+ | |
| Business Model | Free | Free | |
| Latest Version | 1.19.1 | 1.0.5 |
Rating Breakdown
ActiveCampaign Postmark for WordPress
MailerSend – Official SMTP Integration
Download Trends
Over the past 30 days, ActiveCampaign Postmark for WordPress averaged approximately 111 daily downloads while MailerSend – Official SMTP Integration averaged 17.
Recent Reviews
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
MailerSend – Official SMTP Integration Reviews
Doesn’t work
All set up but nothing arrives except the test email. This topic was modified 1 month, 2 weeks ago by primerpizza.
3 templates for plan free
3 templates for plan free is a Joke..
Plugin Ok, company not
As far as I could see, the plugin seems to work Ok, it’s a shame I can’t say the same for the ‘practices’ of the company.
More Wp_Mail Worth Comparing
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Frequently Asked Questions
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Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.