MailTester vs SMTP Labs
| MailTester | SMTP Labs | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | $7/mo |
| Open source | No | No |
| Platforms | Web | api, Web |
| Free plan | Yes | Yes |
| Spam checks | Yes | Yes |
| Link checks | Yes | Yes |
| API access | Yes | Yes |
| Paid from | — | 7 /mo |
| Inbox testing | — | Yes |
Both are listed in Best Email Testing Software. On Samsung Mobile US Press, SMTP Labs scores higher on our published basis.