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 and more.
fast indexing for Maildir, Maildir+ and Maildir-on-VFAT
search for messages based on the sender, receiver, subject, date-range,
size, priority, words in message, flags (signed, encrypted, new,
replied, has-attachment,…), message-id, maildir, tags, attachment
(name, mime-type, text) and more
The packages for RHEL 8 and RHEL 7 are in each distribution’s respective Extra Packages for Enterprise Linux (EPEL) repository. The instructions for adding this repository diverge slightly between RHEL 8 and RHEL 7, which is why they’re listed separately below.
The EPEL repository can be added to RHEL 8 with the following command: