Communication
Best Mail Server Software in 2026
Places 26–34 of 34.
- 26 HCL Domino Web · Windows · Linux · iOS7.5 Visit Specs
- 27
Mail-in-a-Box Web · Linux · API · Self-hosted7.5 Visit Specs - 28 OpenSMTPD Free plan macOS · Linux · Self-hosted7.4 Visit Specs
- 29
Zimbra Collaboration Free trial Web · Windows · macOS · Linux7.3 Visit Specs - 30 Postfix macOS · Linux · Self-hosted7.2 Visit Specs
- 31 Zentyal Server Linux6.4 Visit Specs
- 32 Open-Xchange App Suite Web · iOS · Android5.6 Visit Specs
- 33 vSMTP Linux5.6 Visit Specs
- 34 PowerMTA 5.2 Visit Specs