Evolution crashes when the Inbox size exceeds 2GB. As a result, when you open Evolution the Inbox will be empty, and an Error message will be at the bottom that says
Error while opening folder mbox:/home/myname/.evolution/mail/local #inbox

The solution is to archive your mails frequently. Clear your trash frequently.

 And in this particualr occasion, when your Evolution is crashing use the help of archivemail

In Fedora, perform the following.

 As root

yum install archivemail

Exit root, then as the user you use Evolution

archivemail -d360 --output-dir ~/ArchivedMails/ ~/.evolution/mail/local/Inbox

In this case  ~/ArchivedMails/ is where you want to store the archives. Make sure it is not world-readable, otherwise archivemail will complain.

Now restart evolution.

 checkout the following link for more info.

http://ubuntuforums.org/archive/index.php/t-1120988.html