Adding Gmail and Mac Mail account to Zoho Mail

I REALY want to add my Gmail account and my Mac Mail account to my Zoho Mail. (NOT the other way around)

I am finding this nearly impossible to do!

I find this incredibly weird in light of the fact that Zoho is supposed to be so easy to set up and use.

Doing this in any other email app is a breeze and takes about 5 minutes to do.

I have spents days trying to figure out how to do this in Zoho Mail and still cant figure it out.

Does anyone know the correct way to do this?

Or is it simply not possible?

Please advise.

Thanks.