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Best ClrStream Alternatives in 2026

12 platforms from transactional email software ranked against ClrStream on the same published basis.

  1. 1
    Nuntly Free plan apiWeb €10/mo7.4
    ClrStream vs Nuntly
  2. 2
    Postmark Free plan apiWeb $5/mo7.4
    ClrStream vs Postmark
  3. 3
    Twilio SendGrid Free plan api $19.95/mo7.4
    ClrStream vs Twilio SendGrid
  4. 4
    Maileroo Free plan apiWeb $10/mo7.3
    ClrStream vs Maileroo
  5. 5
    Resend Broadcasts Free plan apiWeb $20/mo7.3
    ClrStream vs Resend Broadcasts
  6. 6
    SMTP2GO Free plan apiWeb $8.33/mo7.3
    ClrStream vs SMTP2GO
  7. 7
    Hyvor Relay Free plan apiself-hostedWeb 7.2
    ClrStream vs Hyvor Relay
  8. 8
    MailerSend Free plan apiiOSWeb $5.60/mo7.2
    ClrStream vs MailerSend
  9. 9
    Retarus Transactional Email Free trial apiWeb 6.8
    ClrStream vs Retarus Transactional Email
  10. 10
    Sendwithus apiWeb 6.6
    ClrStream vs Sendwithus
  11. 11
    Mailchimp Free plan WebiOSAndroid Free5.9
    ClrStream vs Mailchimp
  12. 12
    Posthawk Free plan self-hosted $20/mo5.9
    ClrStream vs Posthawk
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