This article - Sender-Line Branding Tactics In Retail Emails - is on the 'sender' details on emails, but it has an element of branding to it.

I think Branding Your Search Ads With Your Brand Name is mis-named, as it should say 'identity' instead of 'name', but nevertheless it is a good article. File it under 'we do this offline, why don't we do it online?' Answers on a postcard to ...