Welcome to mu!

With the enormous amounts of e-mail many people gather and the importance of e-mail messages in our daily work-flow, it is very important to be able to quickly deal with all that - in particular, to instantly find that one important e-mail you need right now.

For that, mu was created. mu is a tool for dealing with e-mail messages stored in the Maildir-format, on Unix-like systems. mu’s main purpose is to help you to find the messages you need, quickly; in addition, it allows you to view messages, extract attachments, create new maildirs, … See the mu cheatsheet for some examples. Mu’s source code is available in github, and there is the mu-discuss mailing list.

mu includes an emacs-based e-mail client (mu4e), a simple GUI (mug) and bindings for the Guile/Scheme programming language.



2022-06-25: mu/mu4e 1.8 is available

A new release is available; release notes and grab the tarball (latest 1.8.x release).

2021-07-27: mu/mu4e 1.6 is available

A new release is available; release notes and grab the tarball (latest 1.6.x release).

2020-04-18: mu/mu4e 1.4 is available

A new release is available; release notes and grab the tarball (latest 1.4.x release).

2019-04-07: mu/mu4e 1.2 is available

A new release is available; grab the tarball.

2018-02-03: mu/mu4e 1.0 is available

After a decade of development, mu 1.0 is available. Read NEWS with all the details.

2016-12-05: mu/mu4e 0.9.18 is available

mu 0.9.18 offers a number of improvements across the board. For example, people with huge maildirs can use a special “lazy-checking” mode to speed up indexing; it’s now possible to view rich-text message in an embedded webkit-view, and the release adds support for org-mode 9.x. There also many small fixes and tweaks in mu4e, all based on user-feedback.

For all the details, see: NEWS.org.

Get it from the Release page.

2016-01-21: mu/mu4e 0.9.16 is here, and it is our latest stable release!

Better behaviour and context handling

User Interface improvements

Faster Indexing and message management

You can grab the tarball directly from Github or wait a bit to get it through your distribution channels (details may vary from one distribution to another).

None of this would be possible without a team of dedicated individuals: Adam Sampson, Ævar Arnfjörð Bjarmason, Bar Shirtcliff, Charles-H. Schulz, Clément Pit–Claudel, Damien Cassou, Declan Qian, Dima Kogan, Dirk-Jan C. Binnema, Foivos, Foivos S. Zakkak, Hinrik Örn Sigurðsson, jeroen tiebout, JJ Asghar, Jonas Bernoulli, Jun Hao, Martin Yrjölä, Maximilian Matthé, Piotr Trojanek, prsarv, Thierry Volpiatto, Titus von der Malsburg (and of course all people who reported issues, provided suggestions etc.)

We hope you will enjoy this release as much as we do. Happy Hacking!

– The mu/mu4e Team

Old News

Development & download

Some Linux-distributions already provide pre-built mu packages; if there’s no packagage for your distribution, or if you want the latest release, you can download mu source packages from Google Code. In case you find a bug, or have a feature requests, please use the issue tracker.

If you’d like to work with the mu source code, you can find it in Github; also, see the notes on HACKING the mu source code.

There’s also a mailing list.

mu was designed and implemented by Dirk-Jan C. Binnema, and is Free Software, licensed under the GNU GPLv3