Developer(s)Nicholas Marriott
Initial release18 January 2007; 15 years ago (2007-01-18)[1][2]
Stable release
2.0 / 12 February 2019; 3 years ago (2019-02-12)
Written inC
Operating systemUnix-like
Available inEnglish
Typefetchmail and procmail
LicenseISC license
Websitegithub.com/nicm/fdm Edit this on Wikidata

fdm (fetch/filter and deliver mail) is a mail delivery agent and email filtering software for Unix-like operating systems, similar to fetchmail and procmail. It was started in 2006 by Nicholas Marriott who later also started tmux in 2007.[2]


fdm is available as a package in many Unix-like operating systems. It has been included in OpenBSD ports since 2007-01-18.[1]

When in 2014 the last maintainer of procmail posted a message to an OpenBSD mailing list himself suggesting that he remove the procmail port,[3] it has been suggested by a well-known OpenBSD ports maintainer that fdm is the natural alternative[4] (the procmail port,[5] however, has not been removed and remains in place as of 2020).

fdm is listed on the OpenBSD Innovations page, in the section of projects maintained by OpenBSD developers outside of OpenBSD.[2]

See also


  1. ^ a b "fdm-1.9p0 – fetch, filter and deliver mail". OpenBSD ports. 2016-03-08. Retrieved 2020-01-12.
  2. ^ a b c "OpenBSD Innovations". OpenBSD. 2018-08-14. Retrieved 2019-02-26. fdm: Written and maintained by Nicholas Marriott. Started in 2006, port available since January 18, 2007.
  3. ^ Gunther, Philip (2014-11-18). "please remove the procmail port". ports@ (Mailing list). OpenBSD. Retrieved 2020-01-12.
  4. ^ Breuil, Landry (2014-11-18). "Re: please remove the procmail port". ports@ (Mailing list). OpenBSD. Retrieved 2020-01-12. fdm, what else ?
  5. ^ "procmail-3.22p8 – filtering local mail delivery agent". OpenBSD ports. 2017-12-06. Retrieved 2020-01-12.