[MM3-users] Mass subscription maximum addresses

Greetings, Is there a maximum amount of accounts that can be imported using the postorius mass subscription application? I know we can import using the command line; some of our customers have very large mailing lists that change by semester. Trying to see how much of that work could be handled by the list owner rather than by the mailman admins. As always thank you for your time and assistance. Best regards, Enrique