Need to restore user created Mac mailboxes
I had to rebuild my iMac email. In the process, I lost all of my user created mailboxes where I created mailboxes for serial numbers, tax related info, business related info, etc. I have read, re-read, related information and have not found where the user created mailbox info is stored. I have restored all current mail data via Time Machine; all is fine.... - but still no user created mailboxes. Please advise. Many Thanks!!
iMac (2017 – 2020)