Mailu

Mailu is a simple but full-featured mail server distributed entirely as Docker images. Instead of packaging the whole program in one application image, it divides its mail server functionality among multiple Docker images that work together. This approach combines a straightforward software design with the features of a complete mail server while keeping its distribution based on Docker. Mailu is for users who want an open source mail server and are comfortable using a Docker-based package made up of several images. It can serve as an alternative to Gmail for email server functionality. One important difference is that Mailu is not supplied as a single application image: its complete functionality depends on a set of Docker images. Users specifically looking for one self-contained image may find this packaging model less convenient than a single-application format.

Changelog :mailbox: --------- + Mitigate known PHP2Shell attack paths (CVE-2026-109618 and CVE-2026-109619) in webmail with a patched PHP runtime. + This release was triggered by PR/Issue [4143](https://github.com/Mailu/Mailu/issues/4143). + The release notes of the original main release can be accessed via menu item 'Release notes' on [mailu.io](https://mailu.io/). Update ------ The main version X.Y (e.g. 1.9) will…

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