Yes, you can have different default aliases on Mac and iOS. You can't change that both addresses deliver to the same mailbox; you'd have to create a separate iCloud account. Alternatively, filter the mail on your Mac or in iCloud such that mail for the other aliases goes into a folder.
You can't copy folders, but you can copy messages. So, you create folders under "On My Mac" with the same names and structure as your IMAP folders, and then move messages from corresponding remote folders to your local folders of the same names, and finally delete the empty IMAP folders. Cheers, Sabahattin -- You received this message because you are subscribed to the Google Groups "MacVisionaries" group. To unsubscribe from this group and stop receiving emails from it, send an email to macvisionaries+unsubscr...@googlegroups.com. To post to this group, send email to macvisionaries@googlegroups.com. Visit this group at http://groups.google.com/group/macvisionaries. For more options, visit https://groups.google.com/d/optout.