Mailerlite vs Mailster
Compare WordPress plugins and tools side by side. Pick products with “Compare” in the software directory.
| Feature | Mailerlite Visit Details | Mailster v2.0.3 · checked 23 Oct 2026 Paid · ★ 3.5/5 Visit Details |
|---|---|---|
| At a glance | ||
| Active installs | — | 7,000+ |
| Last updated | — | October 15, 2026 |
| Editions | — | Mailster Compatibility Tester · Mailster ($) |
| Pros | — | Server, PHP and mail checks in one admin page; Clear pass, warning or error result for each check; Free to run before buying Mailster |
| Cons | — | Offers a Mailster licence purchase on the same page; Downloads the paid Mailster plugin after checkout; Only checks readiness, it is not the newsletter plugin |
| Mentioned in our posts | 1 | 2 |
| More features | ||
| Other features | — | Server and PHP compatibility checks, Mail delivery check through wp_mail, Admin page for running tests, Mailster licence checkout and download ($) |
| Integrations | ||
| Payment | — | Freemius checkout |
| Plugins | — | Mailster download endpoint |
| Requires WordPress | — | 6.0 |
| Requires PHP | — | 7.4 |
| Tested up to | — | 7.1 |
| Phones home | — | No |
| External services | — | mailster.co |