This step will show you on how to change the from address(from the @gmail.com) displayed on subscriber’s email for their subscribed blog to an alternate email address that also have registered in the google account.
Just follow the steps and you will be able to change your Email “From” Address.
Step 1 – Login to your Feedburner account.
Step 2 – Go to Publicize > Email Subscriptions > Communication Preferences
Step 3 – Under Email “From” Address: change the “Email “From” Address” field to use the address you prefer.