Best turboSMTP Alternatives in 2026
Updated
20 platforms from transactional email software ranked against turboSMTP on the same published basis.
- 1turboSMTP vs Nuntly
- 2turboSMTP vs Postmark
- 4turboSMTP vs Twilio SendGrid
- 5turboSMTP vs Maileroo
- 6turboSMTP vs Resend Broadcasts
- 7turboSMTP vs SMTP2GO
- 8turboSMTP vs Hyvor Relay
- 9turboSMTP vs MailerSend
- 10turboSMTP vs Mailmark
- 11turboSMTP vs Retarus Transactional Email
- 12turboSMTP vs SocketLabs
- 13turboSMTP vs Sendwithus
- 14turboSMTP vs Posthawk
- 15turboSMTP vs Reloop
- 16turboSMTP vs Twilio Segment
- 17turboSMTP vs Mailchimp
- 18turboSMTP vs EmailSuccess
- 19turboSMTP vs ReachMail
- 20turboSMTP vs Mailgun
- 21turboSMTP vs Netcore Email API
turboSMTP alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Nuntly | 7.4 | Free plan | €10/mo | API, Web |
| 2 | Postmark | 7.4 | Free plan | $5/mo | API, Web |
| 4 | Twilio SendGrid | 7.4 | Free plan | $19.95/mo | API |
| 5 | Maileroo | 7.3 | Free plan | $10/mo | API, Web |
| 6 | Resend Broadcasts | 7.3 | Free plan | $20/mo | API, Web |
| 7 | SMTP2GO | 7.3 | Free plan | $8.33/mo | API, Web |
| 8 | Hyvor Relay | 7.2 | Free plan | — | API, self-hosted, Web |
| 9 | MailerSend | 7.2 | Free plan | $5.60/mo | API, iOS, Web |
| 10 | Mailmark | 6.8 | No | $10/mo | API, self-hosted, Web |
| 11 | Retarus Transactional Email | 6.8 | No | — | API, Web |
| 12 | SocketLabs | 6.7 | No | $39.95/mo | API, self-hosted, Web |
| 13 | Sendwithus | 6.6 | No | — | API, Web |
| 14 | Posthawk | 5.9 | Free plan | $20/mo | self-hosted |
| 15 | Reloop | 5.9 | Free plan | $10/mo | self-hosted |
| 16 | Twilio Segment | 5.9 | Free plan | $120/mo | Web, iOS, Android |
| 17 | Mailchimp | 5.8 | Free plan | Free | Web, iOS, Android |
| 18 | EmailSuccess | 5.7 | Free plan | Free | Web |
| 19 | ReachMail | 5.7 | Free plan | $8/mo | Web |
| 20 | Mailgun | 5.6 | Free plan | Free | Web |
| 21 | Netcore Email API | 5.6 | Free plan | Free | Web |
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Questions about turboSMTP alternatives
What is the best alternative to turboSMTP?
Nuntly, number 1 in transactional email software with a score of 7.4 out of 10. The others here: Postmark, Twilio SendGrid, Maileroo and 16 more.
What is the best free alternative to turboSMTP?
Nuntly is the best-ranked alternative with a free plan. 16 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.