May 2012 data from the CMO Council showed a significant majority of marketers worldwide (67%) rated email the most successful digital marketing tactic. June findings from the Direct Marketing Association (DMA) provided further, granular evidence of success, showing improvement in US email open rates and click-through rates (CTR) for both in-house and prospect-intended emails in 2012, as compared to 2010. Read the rest at eMarketer.

Chart - Email Conversion Rates For House vs. Prospect Lists, 2010 & 2012