Email Outgoing Name is not Updating

Hi,

I have signed up with Zoho free mail plan. My domain Name is illuminato.co.in. While Initial Signup I gave my full name as sarathchandran and i have tried modifying it as Sarath Balasundaram in the User profile / Super Admin name. However, the Outgoing mails still reflect sarathchandran as my name.

Please advise.

Regards