Evolution provides integrated mail, addressbook and calendaring functionality to users of the GNOME desktop.

Here are some key features of "Evolution":

· No viruses or worms
· Junk filtering
· Desktop integration
· Developer Platform (EDS)
· Evolution#
· EPlugin
· Advanced email searching
· Web calendars
· vFolders
· User-defined filters
· Multiple accounts
· Palm device support
· Customized reminders
· Multiple calendar views
· iCalendar support
· To-Do list
· LDAP compatible
· Share vCards
· Security and encryption
· Open Source