The Obama campaign rigorously tested the subject lines of fundraising emails during the election and found that informal, and even slightly profane (“Hell yeah, I like Obamacare”), subject lines generated the most clicks and revenue, Bloomberg Businessweek reports.
“We did extensive A-B testing not just on the subject lines and the amount of money we would ask people for,” says Amelia Showalter, director of digital analytics, “but on the messages themselves and even the formatting.” The campaign would test multiple drafts and subject lines—often as many as 18 variations—before picking a winner to blast out to tens of millions of subscribers. “When we saw something that really moved the dial, we would adopt it,” says Toby Fallsgraff, the campaign’s e-mail director, who oversaw a staff of 20 writers.
It quickly became clear that a casual tone was usually most effective. “The subject lines that worked best were things you might see in your in-box from other people,” Fallsgraff says. “ ‘Hey’ was probably the best one we had over the duration.” Another blockbuster in June simply read, “I will be outspent.” According to testing data shared with Bloomberg Businessweek, that outperformed 17 other variants and raised more than $2.6 million.
The strategy was a big success, with most of the $690 million the campaign raised online coming from these emails.
