Post SMTP – Complete Email… vs ICS Calendar (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
Post SMTP – Complete Email…
400K+ active installs
Free + Premium
Quick Verdict
As of April 2026, ICS Calendar has a higher user rating (4.9/5 from 72 reviews) while Post SMTP – Complete Email… leads in active installations (400K+ vs 10K+). Both are free + premium WordPress plugins. Post SMTP – Complete Email… has accumulated 18M+ total downloads while ICS Calendar has 1.8M+.
Detailed Comparison
| Metric | Post SMTP – Complete Email… | ICS Calendar | |
|---|---|---|---|
| Rating | 4.7/5 | ► | 4.9/5 |
| Total Reviews | 518 | ◄ | 72 |
| Active Installs | 400K+ | ◄ | 10K+ |
| Total Downloads | 18M+ | ◄ | 1.8M+ |
| Support Resolution | 81% | N/A | |
| Last Updated | 3 days ago | ► | 3 days ago |
| First Released | 2017 | 2017 | |
| Age | 9 years | 9 years | |
| WP Requires | 5.6.0+ | 4.9+ | |
| PHP Requires | 7.0+ | 7.4+ | |
| Business Model | Free + Premium | Free + Premium | |
| Latest Version | 3.9.1 | 12.0.6 |
Rating Breakdown
Post SMTP – Complete Email…
ICS Calendar
Download Trends
Over the past 30 days, Post SMTP – Complete Email… averaged approximately 11,652 daily downloads while ICS Calendar averaged 1,446.
Recent Reviews
Post SMTP – Complete Email… Reviews
Critical and high severity vulnerabilities over and over again
We’ve been using Post SMTP for years. Initially, we started with WP Mail SMTP, but the free version didn’t include logging, while Post SMTP did, and that occasionally came in handy. So we switched to
Great Plugin
Great Plugin easy to config and troubleshoot.
Great Support for the setup of PostSMTP
Aqib was very helpful in setting up PostSMTP on my site. The plug-in is working very well.
ICS Calendar Reviews
Finally a product that does what it says.
Finally I found this product. The app is simple to setup and the support is next-level! You don’t need to look any further.
Great plugin, prompt support
Easy google calendar customization.And support was also VERY helpful!
Very good
no limits for entries!no extra event management necessary, I just integrated a google calendar
Frequently Asked Questions
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Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.