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Instead of OpenSMTPD

OpenSMTPD alternatives

Apps that do what OpenSMTPD does, from the mail server software list, the ones you can start free with first.

  1. 1

    Kolab

    Free plan AndroidAPIiPhone+5
    7.4 Free plan Visit site
  2. 2

    Courier Mail Server

    Free plan LinuxSelf-hosted
    7.3 Free plan Visit site
  3. 3

    Cyrus IMAP

    Free plan LinuxSelf-hosted
    7.3 Free plan Visit site
  4. 4

    Dovecot

    Free plan LinuxSelf-hosted
    7.3 Free plan Visit site
  5. 5

    mailcow

    Free plan AndroidiPhoneLinux+2
    7.3 Free plan Visit site
  6. 6

    MailEnable

    Free plan AndroidiPhoneSelf-hosted+2
    7.3 Free plan · paid from $395 · 60-day trial Visit site
  7. 7

    Mailu

    Free plan APILinuxSelf-hosted+1
    7.2 Free plan Visit site
  8. 8

    Haraka

    Free plan Self-hosted
    7.1 Free plan Visit site
  9. 9

    poste.io

    Free plan APILinuxSelf-hosted+1
    7.1 Free plan · paid from $349/yr Visit site
  10. 10

    Maddy Mail Server

    Free plan LinuxSelf-hosted
    7.0 Free plan Visit site
  11. 11

    Mail-in-a-Box

    Free plan APILinuxSelf-hosted+1
    7.0 Open source Visit site
  12. 12

    Modoboa

    Free plan LinuxSelf-hostedWeb
    7.0 Free plan Visit site
  13. 13

    SmarterMail

    Free plan AndroidiPhoneLinux+3
    7.0 Free plan · paid from $500 · 30-day trial Visit site
  14. 14

    Stalwart Mail Server

    Free plan APILinuxMac+3
    7.0 Free plan · paid from $2.40/yr · 30-day trial Visit site
  15. 15

    Zimbra Collaboration

    Free plan AndroidiPhoneLinux+4
    6.9 Free plan Visit site
  16. 16

    qmail

    Free plan LinuxSelf-hosted
    6.7 Free plan Visit site
  17. 17

    Postfix

    Free plan LinuxMacSelf-hosted
    6.6 Open source Visit site
  18. 18

    Zentyal Server

    by Zentyal Server
    Free plan Linux
    6.5 Free plan · paid from $230/yr · 15-day trial Visit site
  19. 19

    IceWarp

    Free trial AndroidAPIiPhone+4
    6.3 14-day trial Visit site
  20. 20

    Kerio Connect

    Free trial AndroidAPIiPhone+5
    6.3 Pricing on request · 30-day trial Visit site
  21. 21

    MDaemon Messaging Server

    Free trial AndroidiPhoneSelf-hosted+2
    6.1 30-day trial Visit site
  22. 22

    CommuniGate Pro

    Paid APILinuxSelf-hosted+2
    6.0 Pricing on request Visit site
  23. 23

    HCL Domino

    Paid AndroidAPIiPhone+4
    5.9 Pricing on request Visit site
  24. 24

    vSMTP

    Free plan Linux
    5.7 Free plan Visit site

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