In the data Email Data Source has been tracking there has been a dramatic increase in the number of email marketing campaigns that contain links to Facebook and Twitter. In 2009, Twitter and Facebook have become the 2 most prominent linked-to sites in email marketing.
The chart below illustrates the number of email marketing campaigns tracked by Email Data Source that have contained a link to Twitter or to Facebook.
The first email campaign with a link to twitter.com tracked by Email Data Source appeared in 2007. For all of 2007, there were a total of 215 email marketing campaigns linked to that site. In 2008, the number of email campaigns linked to Twitter grew by 1081% to 2,540 campaigns.
In comparison, there were 729 campaigns that linked to Facebook in 2007 and 12,650 campaigns in 2008.
