WordPress plugin comparison
MailOptin vs Mailster SparkPost Integration
At a glance
- MailOptin has more active installs: 10K+, against 100+ for Mailster SparkPost Integration.
- On a typical day, MailOptin is downloaded about 172 times, Mailster SparkPost Integration about 6.
- Mailster SparkPost Integration has no reviews yet.
- Mailster SparkPost Integration was updated more recently: Oct 15, 2026, against Oct 13, 2026 for MailOptin.
- Both are tested up to WordPress 7.1.4.
Line by line
MailOptin leads on 4 of 5 comparable lines.
| Metric |  MailOptin |  Mailster SparkPost Integration |
|---|---|---|
| Popular rank | #1,517 | #16,576 |
| Active installs | 10K+ | 100+ |
| Downloads, last 30 days | 16.9K | 190 |
| Rating | 4.8(438) | No ratings |
| Support threads resolved | 0% | – |
| Tested up to | 7.1.4 | 7.1.4 |
| Search multiplier | ×0.86 | ×0.28 |
| Last release | 27 days ago | 26 days ago |
| Requires PHP | 7.4 | – |
From WordPress.org's public data, refreshed every night. Downloads are WordPress.org's official daily figures for the last 30 days.
Tags they share
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