WordPress plugin comparison
Post SMTP vs Ultimate WP Mail
At a glance
- Post SMTP has more active installs: 300K+, against 700+ for Ultimate WP Mail.
- On a typical day, Post SMTP is downloaded about 2,628 times, Ultimate WP Mail about 17.
- Post SMTP is rated higher: 4.7 out of 5 from 528 reviews, against 4.5 from 21 reviews.
- Ultimate WP Mail was updated more recently: Oct 5, 2026, against Sep 24, 2026 for Post SMTP.
- Post SMTP resolves more of its support threads: 79% in the last two months, against 0% for Ultimate WP Mail.
- Both are tested up to WordPress 7.1.4.
Line by line
Post SMTP leads on 6 of 7 comparable lines.
| Metric |  Post SMTP |  Ultimate WP Mail |
|---|---|---|
| Popular rank | #161 | #7,967 |
| Active installs | 300K+ | 700+ |
| Downloads, last 30 days | 82.6K | 326 |
| Rating | 4.7(528) | 4.5(21) |
| Support threads resolved | 79% | 0% |
| Tested up to | 7.1.4 | 7.1.4 |
| Search multiplier | ×2.96 | ×0.56 |
| Last release | 1 month ago | 1 month ago |
| Requires PHP | 7.1 | – |
From WordPress.org's public data, refreshed every night. Downloads are WordPress.org's official daily figures for the last 30 days.
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