maildrop – mail delivery agent with filtering abilities

Last Updated on July 11, 2021

maildrop is a replacement local mail delivery agent that includes a mail filtering language. The system administrator can either replace the existing mail delivery agent with maildrop, or users may run maildrop using the ‘forward to program’ mechanism of the existing mail delivery agent.

maildrop first reads the e-mail message on standard input. Trailing carriage return characters are automatically stripped. An e-mail message consists of header lines, followed by a blank line, followed by the contents of the message. The message may contain an mbox-style From_ line before the first header line. If the message does not contain a From_ line, maildrop will create one (if needed).

This mail filter module is included in the Courier mail server, which uses it to filter incoming mail. Maildrop is also provided as a separate package that can be used with other mail servers as well.

Features include:

• Supports mbox-style mailboxes and maildirs.
• Mail filtering language supports RFC822 parsing and GDBM/Berkeley DB database files.

Website: www.courier-mta.org/maildrop
Support: Documentation
Developer: Helge Heß and many others
License: GNU GPL or LGPL

maildrop is written in C++. Learn C++ with our recommended free books and free tutorials.

Return to Email Home Page

Explore Linux
	Best Free and Open Source Software - A huge collection of recommended free and open source software covering every major category.
	In-depth Linux Software Reviews - Detailed assessments of Linux software covering features, usability and overall quality.
	The Big List of Active Linux Distros - An extensive collection of actively developed Linux distributions.
	Open Source Alternatives - Alternatives to software and services from Google, Microsoft, Apple, Adobe, IBM, Autodesk, Oracle and others.
	Essential Linux System Tools - Indispensable utilities for monitoring, maintaining and managing Linux systems.
	Linux Productivity Tools - Useful utilities for improving productivity and streamlining everyday tasks.
	Alternatives to Popular CLI Tools - Modern alternatives to familiar command-line utilities supplied with Linux systems.
	Awesome Free Linux Game Tools - Tools, utilities and companion software that improve gaming on Linux.
	Machine Learning on Linux - Machine learning and deep learning software, self-hosted applications and practical tools.
	Saving Money with Linux - Practical ways to reduce electricity consumption and lower computing costs with Linux.
	Linux Candy - Fun, entertaining and sometimes delightfully quirky software from the lighter side of Linux.