davmail-app ☆

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Description:
Use any mail/calendar client with an Exchange server

Type: Cask | Latest Version: 6.5.1,3873@0 | Tracked Since: Dec 17, 2025

Links: Homepage | formulae.brew.sh

Category: Networking

Tags: exchange caldav imap email gateway enterprise

Install: brew install --cask davmail-app

About:
DavMail is a Java-based gateway that implements Microsoft's proprietary Exchange protocols, exposing them as standard IMAP, SMTP, POP3, CalDAV, and LDAP services. This allows non-Outlook clients like Apple Mail, Thunderbird, or mobile email apps to securely connect to corporate Exchange servers without requiring MAPI or RPC over HTTP protocols. The application runs locally as a background service, translating client requests into Exchange Web Services calls.

Key Features:

Protocol gateway: Translates Exchange protocols to standard IMAP/SMTP/POP3/CalDAV/LDAP
Cross-platform client support: Enables non-Outlook clients to connect to Exchange
Java-based: Runs on macOS, Windows, and Linux
Integrated authentication: Handles NTLM and OAuth 2.0 authentication
Local proxy: Runs on localhost to bridge client and Exchange server

Use Cases:

Accessing corporate Exchange email from Apple Mail or other native macOS mail clients
Syncing Exchange calendars with macOS Calendar app via CalDAV
Using Thunderbird with Exchange servers that don't support modern authentication
Integrating Exchange contacts with macOS Contacts via LDAP

Alternatives:

Outlook for Mac – Native Microsoft client requiring no gateway, but heavier resource usage and subscription cost
Exchange Web Services (EWS) directly – More complex setup without protocol translation; requires client EWS support

Version History

Detected	Version	Rev	Change	Commit
Aug 31, 2025 6:52pm	6.4.0,3755	0	VERSION_BUMP	95966773
Aug 24, 2025 10:26pm	6.3.0,3627	0	VERSION_BUMP	9931752e