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Best Sidemail Alternatives in 2026

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

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