Skip to main content

The Tagged Message Delivery Agent (TMDA) is a set of anti-spam measures, including white-listing, black-listing, challenge-response, and tagged addresses.

Project description

TMDA is an open source software application designed to significantly reduce the amount of spam (Internet junk-mail) you receive. TMDA strives to be more effective, yet less time-consuming than traditional spam filters. TMDA can also be used as a general purpose local mail delivery agent to filter, sort, deliver and dispose of incoming mail.

The technical countermeasures used by TMDA to thwart spam include:

  • whitelists: accept mail from known, trusted senders.
  • blacklists: refuse mail from undesired senders.
  • challenge/response: allows unknown senders which aren’t on the whitelist or blacklist the chance to confirm that their message is legitimate (non-spam).
  • tagged addresses: special-purpose e-mail addresses such as time-dependent addresses, or addresses which only accept certain kinds of communication. These increase the transparency of TMDA for unknown senders by allowing them to safely circumvent the challenge/response system.

This version/package results:

  1. from the original TMDA 1.1.12 source code (apparently no longer maintained as of July 2007)
  2. Git-imported and further maintained by Kevin Goodsell at (apparently no longer maintained as of May 2011)
  3. further maintained by Chris Caputo at (since May 2019)

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Files for TMDAretro, version
Filename, size File type Python version Upload date Hashes
Filename, size TMDAretro- (158.8 kB) File type Wheel Python version py2 Upload date Hashes View
Filename, size TMDAretro- (133.7 kB) File type Source Python version None Upload date Hashes View

Supported by

AWS AWS Cloud computing Datadog Datadog Monitoring Facebook / Instagram Facebook / Instagram PSF Sponsor Fastly Fastly CDN Google Google Object Storage and Download Analytics Huawei Huawei PSF Sponsor Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Salesforce Salesforce PSF Sponsor Sentry Sentry Error logging StatusPage StatusPage Status page