mailboxes not in alphabetical how to sort on mac

Disabling/enabling back the account didn't work for me. The following worked like a charm:

1. Quit Mail

2. Using an app that allows you to make invisible files visible, go to ~/Library/Mail/V[x]/, where [x] is a number that depends on your version of Mac OS (e.g. V4 under macOS Sierra — but the trick worked under previous versions of the system as well).

3. You will see different subfolders, each corresponding to one email account created in Mail.

4. Open the folder (it contains all mailboxes of the related account) that corresponds to the account for which you want to sort the mailboxes and look for a file named .mboxCache.plist.

5. Make it visible (which could also be done by deleting the period "." at the beginning of the name, and/or delete that file. Alternatively, move it outside its location in case you would want to put it back there.

6. Lauch Mail again.

Click and hold the mailbox, then drag it where you want it.

I have a lot of mailboxes, so this is not very helpful. Is there any other way? I already tried disabling the account and then re-enabling it.

I'm not sure if you will find this any easier, but go to Mail/Preferences/Accounts/Account Information and disable all accounts. Then reenable them in alphabetical order. That works for me.