-- (Note: See the git repository for full version)

November 4, 2008: HTML Mail created by Chris Herberte.
July 19, 2009: 5.x-1.1 released (288 SLOC, 60k) as an improved replacement for drupal_mail().
February 26, 2010: 6.x-1.3 released (348 SLOC, 108k) and eventually installed by over 5,000 sites.
January 1, 2011: Patches to improve theming of the 7.x-1.x-dev version submitted by Bob Vincent (pillarsdotnet).
March 10, 2011: Mail System created to allow mail-sending modules to cooperate and co-exist.
March 11, 2011: Bob Vincent granted co-maintainer access.; 7.x-1.1 released (589 SLOC, 76k).
March 16, 2011: Emogrifier separated into its own module.
March 18, 2011: 7.x-2.x and 6.x-2.x branches created.
March 20, 2011: Echo separated into its own module.
March 25, 2011: MIME capability added.
March 26, 2011: MIME support delegated to PEAR Mail_mimePart and Mail_mimeDecode classes.
April 3, 2011: Mime support separated into its own module.
April 4, 2011: 7.x-2.x changes backported to 6.x-2.x.
April 6, 2011: 6.x-2.4 (420 SLOC, 92k) and 7.x-2.4 (414 SLOC, 92k) released.; Project page updated to remove support for 6.x-1.x and 7.x-1.x branches.
April 7, 2011: Dependency on Echo and Mail MIME modules removed.
April 9, 2011: Autodetection of template files in both module and selected theme directories.