Electronic Mail Processing

This category gathers projects related to various aspects of electronic mail handling.

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Version: 4.2  —  2014-05-23
** New operation mode: proxy

** Command line option precedence

Command line options take precedence over configuration file

** elif statement

A familiar `elif' statement is supported, e.g.:

if condition-1
elif condition-2
elif condition-3
** New CONTROL statement esmtp-auth-delayed.

When set to `yes', this statement instructs Anubis to postpone ESMTP
authentication until MAIL command is issued by the client.  This
allows to change authentication credentials in the SMTP section (see

** SMTP section

The new section "SMTP" is invoked each time an SMTP command
is received. This section may alter the command's argument, using the
"modify command", e.g.:

regex :extended
modify command [ehlo] "foo.bar.net"
if command ["mail from:"] "<(.*)>(.*)"
  modify command ["mail from:"] "<root@bar.net>\2"

It is also allowed to use esmtp-* keywords in this section, provided
that `esmtp-auth-delayed yes' is set in the CONTROL section. Changes
in the ESMTP authentication credentials take effect if they occur
either before receiving MAIL command from the client, or when handling
this command, e.g.:

if command ["mail from:"] "<smith(\+.*)?@@example.net>"
  esmtp-auth-id smith
  esmtp-password guessme
  esmtp-auth no

** New keywords: log-facility and log-tag

** Guile output

By default Scheme's standard error and output ports are redirected to
syslog, using priorities `err' and `warning' correspondingly.

** MySQL options file

When using MySQL for Anubis user database, the database parameters and
access credentials are read from the file /etc/my.cnf, section
"anubis".  Additionally, two URL parameters are provided:
"options-file", which sets the name of the options file, and
"options-group", which sets the name of the group.


An SMTP message submission daemon. It represents an intermediate layer between mail user agent (MUA) and mail transport agent (MTA), receiving messages from the MUA, applying to them a set of predefined changes and finally inserting modified messages into an MTA routing network. The set of changes applied to a message is configurable on a system-wide and per-user basis.

Related projects:


Version: 8.13  —  2022-01-02
* Fix compilation with mailutils 3.14

* sed

** fix replacement of the requested Nth pattern instance

This fixes sed expressions like s/X/@/2.

Bug repored in:

** rewrite regular expression scanner

* SPF: return PermError if more than one record is published

Mailfromd is a general-purpose mail filtering daemon for Sendmail, Postfix and MeTA1. It is able to filter both incoming and outgoing messages using criteria of arbitrary complexity, supplied by the administrator in the form of a script file. The daemon interfaces with the MTA using Milter or PMilter protocols.

Related projects:


Version: 3.15  —  2022-04-17
* mbox format: don't count terminating empty line as part of the message

* Improve performance of the Sieve fileinto action

* Improve efficiency of operations on flat mailboxes in append mode

* Bugfixes in quoted-printable and fromrd filters

* Variois fixes in mbox and dotmail format libraries

* Fix compilation with flex version 2.6.1

GNU Mailutils is a swiss army knife of electronic mail handling. It contains a rich set of mail-related utilities and daemons, including pop3d, imap4d, sieve and several domain-specific mail delivery agents.

Related projects:


Version: 1.0  —  2019-08-01
Initial release.

Copyright information:

Copyright (C) 2016-2019 Sergey Poznyakoff

   Permission is granted to anyone to make or distribute verbatim copies
   of this document as received, in any medium, provided that the
   copyright notice and this permission notice are preserved,
   thus giving the recipient permission to redistribute in turn.

   Permission is granted to distribute modified versions
   of this document, or of portions of it,
   under the above conditions, provided also that they
   carry prominent notices stating who last changed them.

Local variables:
mode: outline
paragraph-separate: "[  ]*$"
eval: (add-hook 'write-file-hooks 'time-stamp)
time-stamp-start: "changes. "
time-stamp-format: "%:y-%02m-%02d"
time-stamp-end: "\n"

A flexible mailbox archiver program based on GNU mailutils.

mbar scans the given mailbox folder for mailboxes matching a supplied pattern. For each mailbox found, a set of criteria is applied to its messages. All messages that matched the criteria are then picked and moved to the mailbox of the same name, located in the backup folder. If the destination mailbox doesn’t exist, it is created with the necessary intermediate directories.

Related projects:


Version: 1.0

A simplistic implementation of the SMTP mail transport agent, designed for testing purposes. It behaves almost identically to any real MTA, except that it listens on localhost only and delivers all messages to the given UNIX mailbox file.

Related projects:


Version: 2.1  —  2021-07-01
* Support for Guile 2.2

* Bugfixes

* Improved testsuite


An extendable socket map server with a set of modules and framework for writing new socket maps and testing them.

Related projects:


Version: 3.3  —  2021-02-12
* Fix parsing of po header fields

* Use the Language header instead of Language-Team.

Support for Language-Team and language tables is retained for
backward compatibility.

* Organizational change: repository moved to git

The repository along with links for cloning can be viewed online at

See https://puszcza.gnu.org.ua/git/?group=wyslij-po for instructions.

Wyslij-po runs basic checking on PO files given in the command line and submits them to the Translation Project robot.