GoSMTP – SMTP for WordPress vs Optimizely Campaign (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
Quick Verdict
As of April 2026, GoSMTP – SMTP for WordPress has a higher user rating (4.1/5 from 8 reviews) and leads in active installations (500K+ vs 0). Both are free WordPress plugins. GoSMTP – SMTP for WordPress has accumulated 2.1M+ total downloads while Optimizely Campaign has 209.
Detailed Comparison
| Metric | GoSMTP – SMTP for WordPress | Optimizely Campaign | |
|---|---|---|---|
| Rating | 4.1/5 | ◄ | N/A |
| Total Reviews | 8 | ◄ | 0 |
| Active Installs | 500K+ | ◄ | 0 |
| Total Downloads | 2.1M+ | ◄ | 209 |
| Support Resolution | 0% | N/A | |
| Last Updated | 1 month ago | ◄ | 7 months ago |
| First Released | 2023 | 2025 | |
| Age | 3 years | 1 year | |
| WP Requires | 5.5+ | 6.6+ | |
| PHP Requires | 5.5+ | 7.4+ | |
| Business Model | Free | Free | |
| Latest Version | 1.1.9 | 1.0.0 |
Rating Breakdown
GoSMTP – SMTP for WordPress
Optimizely Campaign
Download Trends
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.
Optimizely Campaign Reviews
No reviews yet
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Frequently Asked Questions
Is GoSMTP – SMTP for WordPress or Optimizely Campaign more popular?
Which has better ratings — GoSMTP – SMTP for WordPress or Optimizely Campaign?
Are GoSMTP – SMTP for WordPress and Optimizely Campaign free?
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Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.