Today I emptied my email inbox AND the trash folder. Altogether, that were over 8000 messages. Most of them were spam. Some were notifications from the various online forums I belong to. Lots were emails from friends and family. But really, the amount had gotten so out of hand I couldn't see myself actually picking through them one by one to figure out what to save and what to dump. So off they went. Let's see if I trashed anything important. I will bet that nothing will be irreplaceable.
A clean inbox and an empty trash folder is the cyber equivalent of a clean desk.