Communication
Best Mail Server Software in 2026
- 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 Citadel Free plan Web · macOS · Linux · API8.3 Visit Specs
- 05
IceWarp From $1.35/mo Free trial Web · Windows · macOS · iOS8.3 Visit Specs - 06 iRedMail From $0.83/mo Free trial Web · Linux · API · Self-hosted8.3 Visit Specs
- 07 MailEnable Free plan Web · Windows · iOS · Android8.3 Visit Specs
- 08
Apache James Free plan Windows · Linux · API · Self-hosted8.1 Visit Specs - 09 Exim Free plan Windows · macOS · Linux · Self-hosted8.1 Visit Specs
- 10 hMailServer Free plan Windows · Linux · API · Self-hosted8.0 Visit Specs
- 11
Kolab Free plan Web · Windows · macOS · Linux8.0 Visit Specs - 12 Modoboa From €11.61/mo Free plan Web · Linux · Self-hosted8.0 Visit Specs
- 13 poste.io From $29.08/mo Free plan Web · Linux · API · Self-hosted8.0 Visit Specs
- 14
SmarterMail From $41.67/mo Free plan Web · Windows · Linux · iOS8.0 Visit Specs - 15
Stalwart Mail Server From $0.09/mo Free plan Web · Windows · macOS · Linux8.0 Visit Specs - 16 Cyrus IMAP Free plan Linux · Self-hosted7.9 Visit Specs
- 17 Kerio Connect Free trial Web · Windows · macOS · Linux7.9 Visit Specs
- 18 Mailu Free plan Web · Linux · API · Self-hosted7.9 Visit Specs
- 19 CommuniGate Pro Web · Windows · Linux · API7.8 Visit Specs
- 20 Dovecot Free plan Linux · Self-hosted7.8 Visit Specs
- 21 qmail Free plan Linux · Self-hosted7.8 Visit Specs
- 22 Haraka Free plan Self-hosted7.7 Visit Specs
- 23 Microsoft Exchange Online From $0.33/mo Web · Windows · macOS · iOS7.7 Visit Specs
- 24 Maddy Mail Server Free plan Linux · Self-hosted7.6 Visit Specs
- 25 MDaemon Messaging Server Free trial Web · Windows · iOS · Android7.6 Visit Specs
How this list is ordered. Specifiction scores each tool on how fully its maker documents it, whether its prices
are published, where the research puts it, the platforms it runs on and whether it can be tried for free (how we rank).
Makers can also buy a numbered place (how Specifiction is paid for).
Compare Courier Mail Server and Axigen Get a place on this list