KMail has been developed by the following people:

Development Team

Thomas McGuire (mcguire at kde org)
Stefan Taferner (taferner at kde org)
Don Sanders (sanders at kde org)
Michael Häckel (haeckel at kde org)
Ingo Klöcker (kloecker at kde org)
Till Adam (till at adam-lilienthal de)
Carsten Burghardt (burghardt at kde org)
Marc Mutz (mutz at kde org)
Zack Rusin (zack at kde org)
Toyohiro Asukai (toyohiro at ksmplus com)
Waldo Bastian (bastian at kde org)
Ryan Breen (ryan at ryanbreen com)
Steven Brown (swbrown at ucsd edu)
Matthias Kalle Dalheimer (kalle at kde org)
Cristi Dumitrescu (cristid at chip ro)
David Faure (faure at kde org)
Philippe Fremy (pfremy at chez com)
Kurt Granroth (granroth at kde org)
Andreas Gungl (a gungl at gmx de)
Steffen Hansen (hansen at kde org)
Igor Janssen (rm at linux ru net)
Matt Johnston (matt at caifex org)
Christer Kaivo-oja (whizkid at telia com)
Lars Knoll (knoll at kde org)
J. Nick Koston (bdraco at darkorb net)
Stephan Kulow (coolo at kde org)
Guillaume Laurent (glaurent at telegraph-road org)
Sam Magnuson (sam at trolltech com)
Laurent Montel (lmontel at mandrakesoft com)
Matt Newell (newellm at proaxis com)
Denis Perchine (dyp at perchine com)
Samuel Penn (sam at bifrost demon co uk)
Carsten Pfeiffer (pfeiffer at kde org)
Sven Radej (radej at kde org)
Mark Roberts (mark at taurine demon co uk)
Wolfgang Rohdewald (wrohdewald at dplanet ch)
Espen Sand (espen at kde org)
Aaron J. Seigo (aseigo at olympusproject org)
George Staikos (staikos at kde org)
Jason Stephenson (panda at mis net)
Jacek Stolarczyk (jacek at mer chemia polsl gliwice pl)
Roberto S. Teixeira (maragato at kde org)
Bo Thorsen (bo at sonofthor dk)
Ronen Tzur (rtzur at shani net)
Mario Weilguni (mweilguni at sime com)
Wynn Wilkes (wynnw at calderasystems com)
Robert D. Williams (rwilliams at kde org)
Markus Wübben (markus wuebben at kde org)
Karl-Heinz Zimmer (khz at kde org)
Development discussion takes place on the KDE PIM developer's mailing list.

Credits

Heiko Hund (heiko at ist eigentlich net)
Bernhard Reiter (bernhard at intevation de)
Jan Simonson (jan at simonson pp se)
Patrick S. Vogt (patrick vogt at unibas ch)
Jan-Oliver Wagner (jan at intevation de)
Wolfgang Westphal (wolfgang westphal at gmx de)
Thorsten Zachmann (t zachmann at zagge de)