You know what happens when you never empty your trash? You wind up with 211,000 email messages in your trash folder and your mail server freaks out. (Most of the 211,000 are, of course, trashed spam.)
If you have too much mail in your folder, you run into the following:
$ rm * -bash: /bin/rm: Argument list too long
The solution is to use
find like this:
$find . -type f | xargs rm
find is recursive, so be careful if you have any subdirectories in that directory.