Mailbox movement

Greetings bcanepa,

Being able to move mailboxes in the Mail app is a great feature. To confirm, are you following the steps below when attempting to move the mailboxes? If not, make sure to follow the steps below as they're specific to moving mailboxes in Mail on Mac. You can also find these step outlined in the following article.

1. "In the Mail app  on your Mac, select a mailbox in the Mail sidebar.
2. Do any of the following:

• Move the mailbox: Drag the mailbox to a new location in the sidebar.
• Copy the mailbox: Press and hold the Option key while you drag it to a new location."

If you use the Finder to move or copy mailboxes, the changes may not appear in Mail.

Move or copy mailboxes in Mail on Mac - Apple Support

If you're following those steps and still unable to move the mailboxes, try closing and reopening the Mail app. To do this, click Mail in the top menu where File, Edit and View is shown, then click Quit Mail in the menu. After you've quit Mail, reopen and test to see if the issue persists. If you can't quit the app via those steps, force quit the app using the steps in the following article.

How to force an app to quit on your Mac - Apple Support

Let us know how that goes!

Hey bcanepa, that’s great news!

Feel free to reach back out if you have any further questions or issues with an Apple device or service.

Have an excellent day!