Max number of 365 exchange users
I have office 365 business premium setup for customer with three user licenses. There are 15 installed desktops with Outlook setup as POP accounts. POP domain is on Godaddy. All is fine here for long time. They want to move the pop email domain to 365 and use the exchange here. There are 24 pop email accounts with Godaddy. Is there a limit on number of accounts to move over? Do we have to have 365 desktop installed to be able to use the exchange?