Fixing Apple Mail

If my mum happened to be running Mac OS X Tiger and her mail had stopped working and was giving the disk full error, even though we know the disk is not really full (anymore) . Then these would be the correct steps to take to fix the problem, hopefully.

1. Quit Mail if it's running.
2. Choose Go to Folder from the Finder's Go menu, then type : EXACTLY!!!!   
   ~/Library/Mail/
   
   
3. Move the file named "Envelope Index" to the desktop.
4. Open Mail. Your will be alerted that your Mail messages will be imported again. Click OK.

Once the issue is resolved, you can remove (delete) the "Envelope Index" file from your desktop

Hope this helps!