I believe they changed this, you can now have an account with multiple levels of...

		ocdtrekkie on May 30, 2023 \| parent \| context \| favorite \| on: JMAP – a modern email open standard I believe they changed this, you can now have an account with multiple levels of users. I believe as long as you have one $5 tier user, you can have additional $3 tier users at your domain.