Cyrus IMAP alternatives

Nearest on its board

1. 16
   ZC

   Zimbra Collaborationzimbra.com

   Zimbra is an enterprise email and collaboration suite with email, calendar, contacts, tasks, and file sharing.

   6.0 APIOpenFree Free tier
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2. 18
   MM

   Maddy Mail Servermaddy.email

   Maddy implements the functionality to send and receive email over SMTP and store messages with IMAP access.

   5.9 APIOpenFree Free tier
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3. 15
   PI

   poste.ioposte.io

   Poste.io is a self-hosted email server with web administration, webmail, spam protection, and mail server components in one Docker container.

   6.0 APIOpenFree Free tier · from $349/yr
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4. 19
   AJ

   Apache Jamesjames.apache.org

   Apache James is a modular mail server running on the JVM.

   5.9 APIOpenFree Free tier
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5. 14
   H

   hMailServerhmailserver.com

   hMailServer is a self-hosted mail server that supports SMTP, IMAP and POP3.

   6.0 APIOpenFree Free tier
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6. 20
   D

   Dovecotdovecot.org

   Dovecot Community Edition is an open-source email server.

   5.8 APIOpenFree Free tier
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7. 13
   PM

   Pegasus Mailpmail.com

   Pegasus Mail is a free, standards-based email client for one or multiple users on a computer or local area network.

   6.0 APIOpenFree Free tier
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8. 21
   ME

   Microsoft Exchange Onlinemicrosoft.com

   Exchange Online is hosted email for business, with email, calendar, and contacts accessible across major browsers and devices.

   5.6 APIOpenFree —
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9. 12
   DM

   Docker Mailserverdocker-mailserver.github.io

   Docker Mailserver is a production-ready full-stack mail server providing SMTP, IMAP, LDAP, anti-spam and anti-virus in a container.

   6.0 APIOpenFree Free tier
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10. 22
    G

    grommuniogrommunio.com
    5.6 APIOpenFree Free tier · from €1.99/mo
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11. 11
    M

    Modoboamodoboa.org

    Modoboa is an open-source platform for installing and managing a self-hosted email server.

    6.1 APIOpenFree Free tier · from €139/yr
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12. 23
    W

    Whitemailwhitemail.io
    5.1 APIOpenFree Free tier
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13. 10
    P

    Postfixpostfix.org

    Postfix aims to be fast, easy to administer, and secure.

    6.1 APIOpenFree Free tier
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14. 24
    K

    KumoMTAkumomta.com
    5.1 APIOpenFree Free tier · from $5,000/yr
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15. 9
    MI

    Mail-in-a-Boxmailinabox.email

    Mail-in-a-Box turns a fresh cloud computer into a mail server that lets users run their own email service.

    6.1 APIOpenFree Free tier
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16. 25
    SM

    Synology MailPlus Serversynology.com
    5.1 APIOpenFree Free tier
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17. 8
    E

    Eximexim.org

    Exim is a mail transfer agent for hosts running Unix or Unix-like operating systems.

    6.2 APIOpenFree Free tier
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18. 26
    SM

    Stalwart Mail ServerStalwart Labs
    5.0 APIOpenFree Free tier · from $2.40/yr
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19. 7
    M

    Mailumailu.io

    The project aims to provide an easily set up and maintained full-featured mail server without proprietary software or unrelated groupware features.

    6.2 APIOpenFree Free tier
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20. 27
    O

    OpenSMTPDopenbsd.org
    4.9 APIOpenFree Free tier
    →