Zoho is per user/inbox but a single user/inbox can receive emails for multiple domains and email ids. You can also set up individual sending identities. I am cu

Zoho is per user/inbox but a single user/inbox can receive emails for multiple domains and email ids. You can also set up individual sending identities. I am currently receiving email for 7 domains while paying for one. There is an undocumented limit though. You can generally only have upto 30 aliases.