Zoho Mail how many emails can I add

Zoho Mail how many emails can I add

I already upgrade my account to Mail Lite from the free version because I had the need to manage more than one domain with some emails accounts. 

There is not info in the upgrade plan about the amount of domains or users limitation, it's only that each time that I need a new user I have to upgrade my plan, until here it's fine for me and here comes my question. 

It's there any limits regarding amount of users/domains in the paid version ?

I would love to continue adding users and domains and upgrading my Mail Lite plan, from this answer depends if I stay or I have to look for another provider because I can't pay more for user/month.