I'm just testing ZOHO for the first time and have run into a showstopper for me. 

I've added two additional POP3 accounts that I must check very regularly. I need to get better notifications when email comes into these pop3 accounts. I need, preferably, a notification box and sound. Also, I need to see some kind of notification in the ZOHO tab in my browser, so I know I've got mail for > ANY < account that has received email; not just my ZOHO account.

Also, really not liking how my pop3 accounts are squeezed so small into the bottom left side of the main menu area. Very bad.

Bottom line: Notifications for POP3 email accounts MUST be better in ZOHO for me to use it.