Back up all data. That means youknowyou can restore the Mail database, no matter what happens.
Copy this line below on this page to select it:
Copy the selected text to the Clipboard by pressing the key combinationcommand-C. In the Finder, select
Go▹Go to Folder
from the menu bar. Paste into the box that opens (command-V), then pressreturn.
A folder window will open. Inside it there should be files with names as follows:
- Envelope Index
Move those files to the Desktop, leaving the window open. Other files in the folder may have longer names that begin as above. Move those files, if any, to the Trash.
Log out and log back in. Relaunch Mail. It should prompt you to re-import your messages. You may get a warning that the index is damaged and that Mail has to quit. ClickOK.
Test. If Mail now works as expected, you can delete the files you moved to the Desktop. Otherwise, post your results.