A recent mail file corruption has led me to finally putting Eudora to bed. Since my personal email has been backed by gmail for a few years, and my work email is a Google apps email account, I figured I'd take advantage of server-based storage to not worry about fixing Eudora mail files, but just use IMAP to sync up with the servers in Apple mail and be done with it.
Well, my personal account and my company account are both the same user name, i.e. firstname.lastname@example.org, and email@example.com. (Not real.) And it seems like this is causing a collision in Mail.app. On editing the initial mail config setup, I get an error: "Invalid Directory: The account path /Users/.../Library/Mail/IMAPfirstname.lastname@example.org is already being used by the account Company Mail".
I was concerned by this, but it did seem to be busily downloading mail into the "All Mail" folder for the new account, so I let it run. But, yeah, it seems broken. What should be individual inbox folders for each account show all the same sets of messages. That's no good.
A funny thing is that I've had these same two accounts on my iPhone, with IMAP, and it keeps them straight!
So, am I doomed to not being able to use Apple Mail in this scenario?
Update: Today, the two inboxes look separate, after a restart of Mail overnight. However, I still get the same error when I try to change the personal account to send through an alternate server, so I think there is still a problem here.