A Starter’s Guide for Gmail Sponsored Promotions (GSP)

Google GSP ad formats have been around for some time and have been tested by a large variety of advertisers. Inventory types have varied throughout the beta, and changed along with the roll-out of Gmail’s tabbed format. If you haven’t yet tested GSP, or you tested early in the beta and are considering it again, take a look at these tips and best practices first.Read the full article