2.1 Requirements

mu/mu4e are known to work on a wide variety of Unix- and Unix-like systems, including many Linux distributions, OS X and FreeBSD, and even on MS-Windows (with Cygwin). Emacs 24 or higher is required, as well as Xapian¹² and GMime¹³.

mu has optional support for both versions 2.2 and 3.0 of the Guile (Scheme) programming language. There are also some GUI-toys, which require GTK+ 3.x and Webkit.

If you intend to compile mu yourself, you need to have the typical development tools, such as C and C++ compilers (both gcc and clang should work), GNU Autotools and make, and the development packages for GMime 3.x, GLib and Xapian. Optionally, you also need the development packages for GTK+, Webkit and Guile.