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Best Retarus Transactional Email Alternatives in 2026

12 apps from transactional email software ranked against Retarus Transactional Email on the same published basis.

  1. 1
    MailerSend Free plan apiiOSWeb $5.60/mo9.1
    Retarus Transactional Email vs MailerSend
  2. 2
    Reloop Free plan self-hosted $10/mo8.2
    Retarus Transactional Email vs Reloop
  3. 3
    Postmark Free plan apiWeb $5/mo8.2
    Retarus Transactional Email vs Postmark
  4. 4
    Maileroo Free plan apiWeb $10/mo7.9
    Retarus Transactional Email vs Maileroo
  5. 5
    Mailgun Free plan Web Free7.7
    Retarus Transactional Email vs Mailgun
  6. 6
    Twilio SendGrid Free plan api $19.95/mo7.7
    Retarus Transactional Email vs Twilio SendGrid
  7. 7
    Plunk Free plan Web Free7.6
    Retarus Transactional Email vs Plunk
  8. 8
    Netcore Email API Free plan Web Free7.6
    Retarus Transactional Email vs Netcore Email API
  9. 9
    Hyvor Relay Free plan apiself-hostedWeb 7.6
    Retarus Transactional Email vs Hyvor Relay
  10. 10
    Mailchimp Free plan WebiOSAndroid Free7.6
    Retarus Transactional Email vs Mailchimp
  11. 11
    Nuntly Free plan apiWeb €10/mo7.5
    Retarus Transactional Email vs Nuntly
  12. 12
    SMTP2GO Free plan apiWeb $8.33/mo7.4
    Retarus Transactional Email vs SMTP2GO
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