Best ClrStream Alternatives in 2026
Updated
20 apps from transactional email software ranked against ClrStream on the same published basis.
- 1ClrStream vs turboSMTP
- 2ClrStream vs Mailchimp
- 3ClrStream vs Twilio Segment
- 4ClrStream vs MailerSend
- 5ClrStream vs Nuntly
- 6ClrStream vs Postmark
- 7ClrStream vs Twilio SendGrid
- 8ClrStream vs Maileroo
- 9ClrStream vs Posthawk
- 10ClrStream vs Reloop
- 11ClrStream vs Resend Broadcasts
- 12ClrStream vs SMTP2GO
- 13ClrStream vs Hyvor Relay
- 14ClrStream vs Netcore Email API
- 15ClrStream vs EmailSuccess
- 16ClrStream vs Mailgun
- 17ClrStream vs Pombo
- 18ClrStream vs ReachMail
- 19ClrStream vs Plunk
- 20ClrStream vs Mailmark
ClrStream alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | turboSMTP | 7.9 | Free plan | €14.95/mo | Android, API, iOS, Web |
| 2 | Mailchimp | 7.8 | Free plan | Free | Web, iOS, Android |
| 3 | Twilio Segment | 7.8 | Free plan | $120/mo | Web, iOS, Android |
| 4 | MailerSend | 7.7 | Free plan | $5.60/mo | API, iOS, Web |
| 5 | Nuntly | 6.4 | Free plan | €10/mo | API, Web |
| 6 | Postmark | 6.4 | Free plan | $5/mo | API, Web |
| 7 | Twilio SendGrid | 6.4 | Free plan | $19.95/mo | API |
| 8 | Maileroo | 6.3 | Free plan | $10/mo | API, Web |
| 9 | Posthawk | 6.3 | Free plan | $20/mo | self-hosted |
| 10 | Reloop | 6.3 | Free plan | $10/mo | self-hosted |
| 11 | Resend Broadcasts | 6.3 | Free plan | $20/mo | API, Web |
| 12 | SMTP2GO | 6.3 | Free plan | $8.33/mo | API, Web |
| 13 | Hyvor Relay | 6.2 | Free plan | — | API, self-hosted, Web |
| 14 | Netcore Email API | 6.2 | Free plan | Free | API, Web |
| 15 | EmailSuccess | 6.1 | Free plan | — | API, self-hosted, Web, Windows |
| 16 | Mailgun | 6.0 | Free plan | Free | Web |
| 17 | Pombo | 6.0 | Free plan | $29/mo | API, Web |
| 18 | ReachMail | 6.0 | Free plan | $8/mo | API, Web |
| 19 | Plunk | 5.8 | Free plan | Free | API, self-hosted, Web |
| 20 | Mailmark | 5.7 | No | $10/mo | API, self-hosted, Web |
Make your app an alternative to ClrStream
See the priceThe sponsored alternative slot on this page is labelled Sponsored.
Questions about ClrStream alternatives
What is the best alternative to ClrStream?
turboSMTP, number 1 in transactional email software with a score of 7.9 out of 10. The others here: Mailchimp, Twilio Segment, MailerSend and 16 more.
What is the best free alternative to ClrStream?
turboSMTP is the best-ranked alternative with a free plan. 19 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation.