maildir-utils - 1.8.14-1 main

mu is a set of utilities to deal with Maildirs, specifically,
indexing and searching.
- mu index - recursively scans a collection of email messages, and
stores information found in a database.
- mu find - searches for messages based on some search criteria.
- mu mkmdir - creates a new Maildir.
.
mu uses libgmime to parse the message, and Xapian to store the message data.