All Mailboxes In MAIL Have Disappeared ! How To Get Them Back, Please ?

[Robert11]

Hello,

Sr. Citizen, apparently, problem.
Using the native mail app on my iMac called MAIL. (Running Sonoma on desktop iMac)

I must have clicked on something that I shouldn't have, but
no idea what.

The sidebar on the left of the MAIL APP still appears as it should, but all
the mailboxes I have created over the years have disappeared.

Any ideas on how to get them back would be most appreciated.
A true major problem for me in not having them.

Help, please.

Thanks,
Bob

 

[MacsBug]

Hi Bob.

If you hover your mouse over the account name in the left, you will see > If you click on that you should see your mailboxes.
See images below.