It is not going to be a photo finish, Twitter takes it away without any doubt. The competition began in 2007 when Twitter did its first email marketing campaign. Since then it has been a race to the finish line. Of course, every month is a finish line of its own. The race will not finish even if Twitter is confortably showing Facebook is hind hooves. The tracking is being carried out by New York based Email Data Source, Inc. who has found data that Twitter is the most important social media outlet in email marketing at this time.
