I have imported my mails from Windows Mail to Mail.app, but I have them on an imported folder and I can't move them to my inbox.
I have tried to move the mbox files to the folder of my mail with finder but didn't worked. Do you have any walkthrough for this or this is the way that Mail.app handles the imported messages?

Also Mail.app can't store the password, which is minor but if we could fix that it would be nice :-)