Thanks go to:

- Dimitris Apostolou for the fast UID comparison algorithm, lots of good
  suggestions about pipelining/UID/mbox support, and lots of testing

- Jay Soffian for Mac OS X keychain support

- Satoru SATOH for GNOME Keyring support

- Julien Larigaldie for MS Exchange pickup directory support

- Gaizka Villate and Emmanuel Bouthenot for mpop-gnome-tool.py

- all senders of bug reports and problem descriptions