I have setup my email in outlook following the instructions given in the zoho settings, but i cant receive any emails when i send from other emails like gmail or yahoo it shows as sent but in the zoho inbox i cant see them many of my customers also say the same thing that they have sent 3 or 4 emails but i am not receiving them. I logged in the web version of Zoho and still can't find the emails in that. 

Can anyone help please.