Mail Server Software
Alternatives to Citadel
The tools Specifiction weighs against Citadel, from its list of mail server software, each with its plans, platforms and spec score.
- 01 Courier Mail Server Free plan Linux · Self-hosted8.5 Visit Specs
- 02
Axigen Free plan Web · Windows · macOS · Linux8.4 Visit Specs - 03
mailcow From €8.90/mo Free plan Web · Linux · iOS · Android8.4 Visit Specs - 04
IceWarp From $1.35/mo Free trial Web · Windows · macOS · iOS8.3 Visit Specs - 05 iRedMail From $0.83/mo Free trial Web · Linux · API · Self-hosted8.3 Visit Specs
- 06 MailEnable Free plan Web · Windows · iOS · Android8.3 Visit Specs
- 07
Apache James Free plan Windows · Linux · API · Self-hosted8.1 Visit Specs - 08 Exim Free plan Windows · macOS · Linux · Self-hosted8.1 Visit Specs
- 09 hMailServer Free plan Windows · Linux · API · Self-hosted8.0 Visit Specs
- 10
Kolab Free plan Web · Windows · macOS · Linux8.0 Visit Specs - 11 Modoboa From €11.61/mo Free plan Web · Linux · Self-hosted8.0 Visit Specs
- 12 poste.io From $29.08/mo Free plan Web · Linux · API · Self-hosted8.0 Visit Specs
- 13
SmarterMail From $41.67/mo Free plan Web · Windows · Linux · iOS8.0 Visit Specs - 14
Stalwart Mail Server From $0.09/mo Free plan Web · Windows · macOS · Linux8.0 Visit Specs - 15 Cyrus IMAP Free plan Linux · Self-hosted7.9 Visit Specs
- 16 Kerio Connect Free trial Web · Windows · macOS · Linux7.9 Visit Specs
- 17 Mailu Free plan Web · Linux · API · Self-hosted7.9 Visit Specs
- 18 CommuniGate Pro Web · Windows · Linux · API7.8 Visit Specs
- 19 Dovecot Free plan Linux · Self-hosted7.8 Visit Specs
- 20 qmail Free plan Linux · Self-hosted7.8 Visit Specs
- 21 Haraka Free plan Self-hosted7.7 Visit Specs
- 22 Microsoft Exchange Online From $0.33/mo Web · Windows · macOS · iOS7.7 Visit Specs
- 23 Maddy Mail Server Free plan Linux · Self-hosted7.6 Visit Specs
- 24 MDaemon Messaging Server Free trial Web · Windows · iOS · Android7.6 Visit Specs
- 25 HCL Domino Web · Windows · Linux · iOS7.5 Visit Specs
- 26
Mail-in-a-Box Web · Linux · API · Self-hosted7.5 Visit Specs - 27 OpenSMTPD Free plan macOS · Linux · Self-hosted7.4 Visit Specs
- 28
Zimbra Collaboration Free trial Web · Windows · macOS · Linux7.3 Visit Specs - 29 Postfix macOS · Linux · Self-hosted7.2 Visit Specs
- 30 Zentyal Server Linux6.4 Visit Specs