This is very frustrating; I'm trying to connect my zoho account to mail, but when mail asks me to enter my username and password mail gives me this message : "Logging to the IMAP server "imap.zoho.com" failed. Make sure the user name and password you entered are correct, then click continue....

My password and username are correct that's for sure, I have tripled checked. Imap is also enabled in zoho. 

What's wrong seriously?

Thanks in advance. 

Nic.