Added:Dec 10, 2008
A strong subject line is the key factor in improving the return-on-investment of email marketing campaigns, rather than the length of the subject line, according to new research.
The study, from Email Services Provider Epsilon International, analysed the impact of more than one billion emails over nearly 20,000 separate campaigns sent out by five US retail clients and five US consumer goods clients, in what is understood to be the biggest ever study of the impact of subject line length...read on
