I have recently switched my desktops over to Linux Fedora. the stability of the OS rivals that of MAC and blows away windows. I believe it could be a great solution for small businesses but lacks the support of apps. I believe with the Zoho One offering (any of their apps) and your focus on small businesses, I think Zoho could be the dominant player in the Linux market (which is starting to grow due to security and need for OS stability and because Linux of lengths the life of hardware). I think if Zoho was to develop their apps for Linux, there would be a large adoption in the business world of Linux and Zoho.
A better clarity so you can create other users to start using Zoho Mail. You can directly Add Users from the Control Panel to your Organization. You can invite users with the existing email address. If the person (user) already uses ZohoCRM, then you can import users from Zoho CRM. You can also import them using a .csv file. (if you are planning to add them in Bulk) In this topic, We will be discussing on how to Add and Invite users only. The Import options are self explanatory. ____________________________________________________________________________________________________________