Do you know, under the zoho Email icon there is your user name, But right after that you will see That [ |... ] if you hover your mouse over it. There is actually A missing section that shows you your email address which you will almost never see because the "compose table" is smaller than the margin size needed to display your full [user name & email address].

So instead of placing the Email address onto the same line as the " user name", Why not just add it to the Mostly empty Tool (settings/ notification/Active chats) Bar? 

This would also help make the bar look Not so empty taking the length of the entire browser and Only having 5 buttons on it.