mailutils を Homebrew, apk, apt, MacPorts, Nix, pacman, zypper でインストール

プロジェクトリンク

• ホームページ
• リポジトリ
• 上流ドキュメント
• パッケージマネージャページ

コマンドとエイリアス

• comsatd
• decodemail
• dotlock
• frm
• from
• imap4d
• lmtpd
• mail
• mailutils
• mailutils-config
• messages
• mimeview
• movemail
• pop3d
• popauth
• putmail
• readmsg
• sieve

プロジェクトの歴史

The Mailutils manual describes the package as having started from a practical need to handle large mailbox files more gracefully than the POP3 servers available to its authors at the time. That origin explains the library-centered design: programs built on Mailutils are meant to work across mailbox formats through one interface rather than carrying separate mailbox-specific code.

Public GNU source archives show Mailutils 0.1 available in September 2002, 1.0 in July 2006, and the 3.x line continuing through Mailutils 3.21 in December 2025. Over that span the package accumulated classic Unix mail commands, protocol daemons, Sieve support, MH-compatible tools, and libmailutils APIs for mailbox, MIME, authentication, and protocol work.

採用の歴史

The upstream homepage identifies Mailutils as official GNU software and lists it as useful to regular users, system administrators, and developers. It also names other free software packages using it, including MH-E and Mailfromd, which is a useful signal that Mailutils is both a user-facing toolbox and a reusable mail framework.

In package-manager culture, Mailutils matters because it is the GNU-flavored provider of familiar commands such as mail, frm, from, messages, movemail, readmsg, and sieve, while also shipping POP3, IMAP4, LMTP, and related services. That makes one package cover many mail-adjacent command names that otherwise vary by Unix lineage.

使われ方

Users install Mailutils for traditional command-line mail reading and sending, mailbox inspection, message extraction, MIME viewing, movemail-style retrieval, and Sieve filtering. Administrators use its daemons and delivery tools for POP3, IMAP4, LMTP, local delivery, and mailbox conversion.

Mailutils reads a site-wide configuration file named ${sysconfdir}/mailutils.conf and, for client utilities, per-user files named after the program such as ~/.sieve. Its wicket command looks up matching URLs in the default ticket file ~/.mu-tickets, allowing credentials to be kept out of command lines and ordinary examples.

パッケージ好きにとっての重要性

Mailutils is a dense GNU package in the best and worst senses: one formula brings in a pile of historically loaded mail commands plus servers, libraries, and protocol glue. It is especially interesting when comparing which implementation of mail, movemail, or sieve a distribution chooses to expose.

Because the suite understands UNIX maildrops, Maildir, MH, POP3, IMAP4, SMTP, TLS, SASL, and related mechanisms, it sits at the crossroads of old local Unix mail and network-era mail protocols. That makes it a frequent dependency, conflict, or alternative in mail tooling stacks.

タイムライン

• 2002: Mailutils 0.1 appears in the official GNU FTP archive.
• 2006: Mailutils 1.0 appears in the official GNU FTP archive.
• 2025: Mailutils 3.21 is released and documented by the upstream manual.

Related projects

• GNU Emacs movemail is a historical reference point for Mailutils movemail.
• MH-E is listed by the upstream homepage as free software using Mailutils.
• Mailfromd is listed by the upstream homepage as free software using Mailutils.

ソース

• https://ftp.gnu.org/gnu/mailutils/
• https://mailutils.org/
• https://mailutils.org/manual/html_node/History.html
• https://mailutils.org/manual/html_node/configuration.html
• https://mailutils.org/manual/mailutils.html