If you ever want to delete your entire Evolution account, history, configuration, settings, etc and start over from scratch, here’s how to do it:
Back up all of your files first (of course).
$ rm -rf ~/.evolution
$ rm -rf ~/.gconf/apps/evolution
$ evolution –force-shutdown
Find the process id for ‘gconfd’ and kill it:
$ ps -ef|grep gconfd
yourusername 30515 [...]