Maddy Mail Server

OPEN SRC

All-in-one mail server that implements SMTP (both MTA and MX) and IMAP. Replaces Postfix, Dovecot, OpenDKIM, OpenSPF, OpenDMARC with single daemon

► Small teams wanting a simple integrated mail server

VG SCORE

7.2

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Product Details

PricingOpen Source

API✅ REST

Learning CurveModerate

Integrations11 available

■ INTELLIGENCE BRIEFING — Weekly tool drops. No spam.

PROS & CONS

STRENGTHS

Dramatically simpler configuration and deployment than traditional multi-daemon stacks.
Strong security defaults with modern protocols and built-in authentication mechanisms
Unified configuration simplifies setup, managing mail delivery, filtering, and authentication through a single file and tool.

WEAKNESSES

−Advanced configuration or integration with external tools can be less straightforward due to its integrated nature.
−Less battle-tested and has a smaller ecosystem/community than established tools like Postfix.

KEY FEATURES

Modern Architecture

Written in Go with a focus on security, concurrency, and simplicity

Single Configuration

Managed through one TOML config file instead of multiple services

Built-in Security

Integrates SPF, DKIM, and DMARC checking and signing natively.

Unified SMTP & IMAP

Implements both mail transfer (MTA/MX) and storage (IMAP) in one process.

WHO IS Maddy Mail Server BEST FOR?

System administrators and DevOps engineers

They need a modern, integrated mail server to replace complex multi-daemon setups like Postfix and Dovecot for internal or small-scale email services.