Including social media links in promotional emails improves their click-through rate (CTR), according to a recent study from email marketing technology firm GetResponse. Results of the study show that email messages with no social network links return an average 7.2% CTR, while email messages with one social network link returned an average 8.7% CTR. This CTR jumps to 9.3% for messages with two social network links, a roughly 7% increase from messages with one link and 29% increase from messages with no links. In addition, messages with three or more social sharing links generated an 11.2% CTR, which is 20% higher than messages with two links. Broken down by specific social network, Twitter offers the highest CTR (10.2%), followed by Facebook (9.1%). Digg offers the lowest CTR of major social networks (5.3%)
