Mobile devices have become an extension of the customer. Smartphones and tablets are now the average consumer's eyes and ears when it comes to great deals and steals during the holiday season. By signing up for retailer emails, these shoppers hold the latest offers in the palm of their hand 24/7.

But, as consumers begin to treat these tools as partners when making purchase decisions, mobile brings an opportunity for retailers to connect with their customers across channels and hone their mobile marketing techniques. As part of its recent mobile marketing study, Responsys surveyed more than 1,000 U.S. consumers who have already opted in to receive emails from retailers to gauge their interest in interacting with their favorite brands via multiple channels.

The following statistics provide insight for marketers looking to foster customer relationships via the cross-channel experience: