delete mailbox

frankfromoverland park wrote:

Mail is not responding on MacBook Pro 2018. Can I delete mailbox and then add it back?

yes...you can add and delete mailboxes.

I will say—For problem accounts the go to way to sort things out is to delete the account(s) from the Mail.app, then add it back.

Remove email accounts in Mail on Mac

Remove email accounts in Mail on Mac - Apple Support

Add email accounts in Mail on Mac - Apple Support

Add email accounts in Mail on Mac - Apple Support

Note—

IMAP accounts stay on the server, so no local loss, when you re-sync

POP accounts download and remove from the server—therefor save your inbox/sent box if you want them

“On My Mac" is just that, local folders you created and moved mail into. So no loss

I would try quitting mail and relaunch it holding the Shift key down and see if you can get any further