On-premise email server for Windows

MDaemon Messaging Server

Current version: v25.x  |  Release notes  |  QuickStart guide

A trusted Microsoft Exchange alternative, MDaemon delivers a secure, full-featured private email server for Windows — with complete control and no cloud dependency. It supports IMAP, SMTP, and POP3, and includes outstanding groupware features, webmail, and mobile sync right out of the box.

Built for small-to-medium businesses, MDaemon offers low total cost of ownership with no per-user licensing complexity, and runs entirely on your own infrastructure.

Looking for a hosted MDaemon option? Click here. This version is for on-premise use only — hosting is not permitted per the EULA.

Overview

MDaemon Server supports IMAP, SMTP, and POP3 protocols and delivers solid performance from its feature-rich, user-friendly design. As a trusted Microsoft Exchange alternative, it provides outstanding groupware features, deep integration with Microsoft Outlook via the MDaemon Connector for Outlook, and a multi-language webmail client for email access from anywhere.

MDaemon is built for small-to-medium-sized businesses and delivers secure, standards-compliant messaging with a low total cost of ownership — supporting mailing lists, ActiveSync, content filtering, multiple domain support, flexible administration, and an open-standards design optimized for mobile access.

MDaemon supports most mobile devices including iPhone, Android, and BlackBerry, with full access to email, calendar, and contacts. Its layered security approach — including MDaemon AntiVirus (SecurityPlus) — offers proactive protection against spam, viruses, and phishing. MDaemon uses advanced email authentication including DKIM, DK, Sender-ID, SPF, and Vouch By Reference (VBR).

Add-ons & components

Next-generation antivirus and spam protection for MDaemon. Provides real-time spam filtering and Zero Hour Virus Outbreak Protection — the number one solution for safeguarding your MDaemon messaging platform.

Unlocks the full collaborative power of Microsoft Outlook using MDaemon as the mail server. Share Calendar, Tasks, Contacts, Notes, and Journal folders — without the cost or complexity of Microsoft Exchange.

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