Maddy Mail Server

maddy.email · checked 7 Oct 2026

#18 · Email Server Software #21 · Mail Server Software

Visit maddy.email ↗ Alternatives Maddy Mail Server vs Cyrus IMAP

How it plugs in

—Public API

NoOpen source

YesFree tier

Signal on Email Server Software5.9#18 of 33

Maddy implements the functionality to send and receive email over SMTP and store messages with IMAP access.

Pricing

Maddy Mail ServerSelf-hosted mail server; IMAP storage is betaFree

As maddy.email lists them, checked 7 Oct 2026.

Near it

All alternatives →

Runs on

Web
Windows
Mac
Linux
iOS
Android

Facts

Website: maddy.email
Price: Free tier
Free trial: Not stated
Administration: Maddy has no web interface for administration; administration is done through its CLI utility.
Composable server: Maddy combines functionality that would otherwise be provided by Postfix, Dovecot, OpenDKIM, OpenSPF and OpenDMARC in one daemon.
Deployment: The maker documents Linux installation options including a prebuilt amd64 tarball, Docker image, source build and Arch Linux packages.
Docker: An official Docker image is available from Docker Hub and exposes standard SMTP, submission and IMAP ports.
Dovecot integration: Maddy can use Dovecot as an external IMAP server and use its SASL authentication protocol for submission.
Email security protocols: It implements DKIM, SPF, DMARC, DANE and MTA-STS protocols.
IMAP status: The maker describes IMAP storage as beta quality and suggests Dovecot for users who need a stable, feature-packed implementation.
Intended audience: The setup guide presents Maddy as a way to set up a mail server for personal use and says any VPS can work for small configurations.
Rspamd integration: Maddy supports rspamd's HTTP protocol directly, without requiring a milter proxy.
Runtime requirements: The FAQ says a small personal server needs about 1 GiB of RAM and disk space.
Security policy: Outbound delivery security supports MTA-STS and DNSSEC for MX authentication and TLS enforcement using MTA-STS and DANE.
Spam filtering: Maddy does not include a content spam filter, but can integrate with rspamd.

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