Multiple duplicate mailboxes are listed. My macOS is Monterey.
How can I get rid of the duplicate mailboxes?
iMac 21.5″, macOS 12.6
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IMAP settings a strictly for server email. When you create an On my Mac mailbox, those are static mailboxes you can move emails to or copy them. Be sure to name your On My Mac mailboxes differently from your IMAP mailboxes so you aren't confused. Naturally inbox will refer to the IMAP inbox in each account.