Unable to access mail in time machine backup
I have attempted to restore an email in time machine, I have retrieved other lost files by opening the folder, then time machine, going back to a date before deleting and then passing restore. Unfortunately after opening Mail and selecting inbox, then time machine, there are no messages to view, no way to go back in time, and the restore button is unlit. Any help would be greatly appreciated. I am using a Lacie 2TB mobile hard drive after the failure of my Airport time capsule.