I'm trying to migrate all mails and folder from a IMAP email to a another. I selected all the folders and drag them to the new mailbox.

I can see some of the folder but not all the sub-folder, also when I check mailbox detail, the count is not the same.

the issue is I start moving some new mail to the new mailbox only.

How can I get the two mailbox completely synced ?

PS one is from iCloud, the another is from a exchange server.

1 Answer 1


I find the solution, it's was too obvious, but just Mailbox menu > Export mailbox

and then can move them to correct account : ~/Library/Mail/V4

(or import them from the menu)

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