maildir-utils

maildir-utils is an open-source Linux productivity application for working with messages stored in maildirs. It provides command-line operations for indexing, searching, and viewing email. The tool is intended for people who manage personal mail collections and want to locate or inspect messages through command-line workflows.

Its search functions can filter messages by sender, recipient, subject, date range, size, priority, message text, and message flags. Searches can also use message IDs, maildirs, tags, and attachment details including file names, MIME types, and attachment text. It recognizes encrypted and signed messages, as well as indicators such as new messages, replied-to messages, and messages that contain attachments. Accent and case normalization can match related forms such as angstrom and Ångström.

Beyond searching, maildir-utils can add or remove messages, create maildirs, and extract attachments. It can export address lists and search those lists. The software can work with email clients such as mutt and Wanderlust, while mu4e provides an Emacs-based email client built around it.

On MirrorNest, maildir-utils fits the Productivity category because it supports organizing and working with personal information in email. MirrorNest mirrors the official Linux build directly on its own storage rather than presenting a separately repackaged edition. The mirrored build is scanned for malware before publication, and its open-source license permits the software to be used and examined within the terms of that license.