[Evolution] Inbox too large

["Mark Pinto" <markybob gmail com>]

Evolution has stopped being able to receive new emails.  When I try to
fetch new mail (pop3), I receive this error message:
"Error while Feching Mail.  Cannot append message to mbox file:
/home/markybob/.evolution/mail/local/Inbox: File too large"

ls -lh on the file shows that it is 2.0G in size.  What can I do short
of deleting emails?

Thanks!