WordPress plugin comparison
Post SMTP vs Solid Mail
At a glance
- Post SMTP has more active installs: 300K+, against 60K+ for Solid Mail.
- On a typical day, Post SMTP is downloaded about 2,726 times, Solid Mail about 189.
- Post SMTP is rated higher: 4.7 out of 5 from 528 reviews, against 4.2 from 52 reviews.
- Post SMTP was updated more recently: Sep 24, 2026, against May 12, 2026 for Solid Mail.
- Post SMTP resolves more of its support threads: 79% in the last two months, against 0% for Solid Mail.
- Post SMTP is tested with a newer WordPress: 7.1.4, against 6.9.11 for Solid Mail.
- Solid Mail has been around longer: since 2012, against 2017 for Post SMTP.
Line by line
Post SMTP leads on 8 of 8 comparable lines.
| Metric |  Post SMTP |  Solid Mail |
|---|---|---|
| Popular rank | #161 | #671 |
| Active installs | 300K+ | 60K+ |
| Downloads, last 30 days | 80.3K | 5.2K |
| Rating | 4.7(528) | 4.2(52) |
| Support threads resolved | 79% | 0% |
| Tested up to | 7.1.4 | 6.9.11 |
| Search multiplier | ×2.96 | ×0.87 |
| Last release | 1 month ago | 6 months ago |
| Requires PHP | 7.1 | 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
More comparisons
Is one of these yours?
Track your plugin against its rivals every day: rank, installs, downloads, ratings and their releases, with alerts when anything moves.
Start free