Mailu

Features

Self-Hosted Email Delivery Platforms - Offers a complete, self-hosted email delivery platform deployed via Docker for private communication control.
Email Hosting Platforms - Provides a centralized platform for hosting multiple email domains and user accounts with custom routing and quotas.
Container Orchestration Tools - Deploys each mail server component as a separate container image to ensure consistent environments and simplified orchestration.
Containerized Deployments - Packages the entire email distribution system into containerized images for simplified installation and maintenance.
Email Authentication Records - Configures SPF, DKIM, and DMARC records to ensure outgoing emails reach recipients and avoid spam folders.
Mail Domain Administration - Allows administrators to manage multiple email domains, assign global privileges, and enforce storage quotas.
Sender Identity Verifications - Prevents domain spoofing by validating sender identity using DNS records such as SPF and DKIM.
Email Delivery Services - Implements standard communication protocols to ensure reliable sending and retrieval of email messages.
Mail Servers - Provides a full suite of containerized mail server software for sending, receiving, and managing electronic mail.
Email Security Frameworks - Implements a security framework using DKIM, SPF, and TLS to verify sender identity and prevent phishing.
Email Spam Filtering - Intercepts incoming traffic using greylisting and auto-learning engines to block spam and malicious content.
Mail Transmission Security - Enforces security standards for authenticating and encrypting email traffic between servers and clients.
Transport Security Configurations - Implements TLS certificate management and encrypted protocols to secure mail transport between clients and servers.
Email Aliasing - Manages email traffic by associating multiple email addresses with single user profiles via aliasing.
Admin Dashboards - Provides a web-based dashboard for managing users, server settings, and domain configurations across the email cluster.
Web Interfaces - Includes a browser-based client for users to access their email and manage personal account settings.
Email Administrative Interfaces - Includes a web-based administrative interface for managing domains, user accounts, and server configurations.
Email Forwarding Rules - Directs incoming messages to correct recipients via configurable aliases and forwarding rules.
Microservice Architectures - Decomposes email functions into independent, modular services for sending, receiving, and filtering.
Webmail Clients - Ships a browser-based webmail client for users to access their messages and manage account settings.
Developer Tools - Modular mail server distribution for containerized environments.
Communication and Collaboration - Full-featured mail server designed for easy maintenance.
Email Servers - Easy-to-maintain, containerized mail server suite.
Email Solutions - Modular mail server built on Docker.

Open-source alternatives to Mailu

Similar open-source projects, ranked by how many features they share with Mailu.

stalwartlabs/stalwart
stalwartlabs/stalwart
13,287View on GitHub
Stalwart is a self-hosted email and collaboration infrastructure that provides an integrated mail server supporting SMTP, IMAP, POP3, and JMAP protocols. It functions as a comprehensive communication hub, combining email hosting with a collaboration server for shared calendars, contacts, and files. The system distinguishes itself through a distributed architecture that uses peer-to-peer cluster coordination to ensure high availability and fault tolerance. It features a built-in security suite that implements an S/MIME and OpenPGP email gateway alongside automated TLS certificate provisioning
Rustcaldavcarddavimap
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mjl-/mox
mjl-/mox
5,713View on GitHub
Mox is a self-hosted email server that runs as a single compiled Go binary, handling the full lifecycle of sending and receiving email through SMTP, IMAP4rev2, and a built-in webmail application. It is designed to be operated without external dependencies or runtime plugins, with all mail services — including spam filtering, queue management, and web interfaces for administration and account management — contained in one executable. The server distinguishes itself through automated TLS certificate management via ACME, DNS-based autoconfiguration for email clients, and file-based configuration
Go
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mail-in-a-box/mailinabox
mail-in-a-box/mailinabox
15,343View on GitHub
Mail-in-a-Box is a self-hosted email server appliance that automates the deployment of SMTP, IMAP, and POP3 services on Linux. It functions as a complete suite including a DNS management server, a spam and abuse filter, and a web-based administrative control panel for managing users, aliases, and storage quotas. The project distinguishes itself through a high degree of automation for email security and authenticity. It automatically provisions and maintains SPF, DKIM, DMARC, and DNSSEC records to prevent domain spoofing, while managing the installation and rotation of TLS certificates and enf
Pythonemailmailserver
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postalserver/postal
postalserver/postal
16,618View on GitHub
Postal is an open-source mail delivery platform designed for self-hosted sending and receiving of email using standard mail transfer protocols. It serves as a comprehensive email infrastructure that provides full delivery tracking and management of outgoing mail streams. The system includes an SMTP server manager with a web administration interface for configuring server settings and monitoring delivery status. It distinguishes its outbound traffic management through priority-based IP rotation and assignment to help maintain sender reputation. The platform covers incoming email processing an
Rubymailmail-serverpostal
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See all 30 alternatives to Mailu

MailuMailu

Features

Open-source alternatives to Mailu

stalwartlabs/stalwart

mjl-/mox

mail-in-a-box/mailinabox

postalserver/postal

Star history

Open-source alternatives to Mailu

stalwartlabs/stalwart

mjl-/mox

mail-in-a-box/mailinabox

postalserver/postal