email add on issues

I have just upgraded to use email add on in my zoho account. I use google apps for my email programs and tested the new feature using my company email account in the email settings on zoho. When a person receives my email they see the email being sent from my zoho email account, not my company email account (email header says send on behalf of my company by zoho). Can somebody advise me how this can be changed to only show my company email address, not my name at zoho. Thanks