Hey, I am trying to import a Mail library to my Macbook Air. The folder's format is XXX.imapmbox, and has the following subfolders inside: Attachments, Messages and an info.plist file. I have tried the following ways to import it in the Mail app: - Import Apple Mail and selecting the XXX.imapmbox folder. Error message: "No valid Apple Mail files were found." - Import Files in mbox format: Error message: "No valid mbox files were found." I am desperate since I have so much important information in this folder..please help!! Thanks.