IMAP Authentication in Apple Mail vs zoho webmail

IMAP Authentication in Apple Mail vs zoho webmail

I am logging in just fine with the webmail interface. However, I cannot get a mail client (apple) to work. I have tried retyping and recreating the account from scratch a few times. My credentials are rejected, yet webmail does not reject them.

I have done this several times before with zoho and Apple mail. I have to be missing something basic, but after an hour here, I'm lost.