The Boston Consulting Group, which has been following the tablet market for some time, just issued a report indicating that the reality of tablet adoption has far exceeded expectations, which is creating new challenges and opportunities for marketers. At the same time, a study from Adobe Digital Marketing Insights reports that shopping is one of the major activities of tablet owners. Marketers, take heed.

Just 9 percent of senior marketers believe traditional ad agencies are doing a good job of evolving and extending their service capabilities, according to the CMO Council's new study, which also includes best–practice discussions with more than 20 leading brand advertisers.

Looking at one marketing channel at a time provides incomplete insight into performance, yet many businesses split management of channels across multiple teams--leading to internal competition for the same conversions.

From solid subject lines to social sharing to mobile optimization, the following tips will help your team increase the click-through rate of your email marketing campaigns.