How To Reset the Postbox UI
If your Postbox UI gets into a weird state, try removing your localstore.rdf file to reset the UI.
To remove the localstore.rdf file:
- Quit Postbox
- Locate your Postbox profile.
- Under Profiles/<a string of numbers.default> is a file called localstore.rdf
- Remove localstore.rdf
- Restart Postbox