Adding Zoho Account to Iphone Mail

Adding Zoho Account to Iphone Mail

Hello,

I've recently signed upto ZOHO and added three email address's to my account for my own domain.

The emails work fine on Web-Based & ZoHo App, but am really struggling to add to my iphone mail box without recieving password errors.
Is there any upto date instructions to add this please so it works?

Thank you
Andy