Step by step Mailbox Achiving -- How to

Sorry if this is too basic but I cannot figure out the steps to import an Apple Mail Mailbox into a database. File->Import has no Mailbox option, the import icon (box with arrow) shows nothing, and I could not find the procedure in the Help section (looked at Archiving Email)… Help !

Config: Version: 3.9,
macOS: Version 13.2.1

Post a screen capture of what you’re seeing.

This is what I am seeing:

There is no import email command.
As noted in the built-in Help and manual, email is handled in the View > Import sidebar.

Great, thanks! I did not expect the View menu to lead to an action, now I got it.

You’re welcome.