More than 20 percent of commercial, permission-based email does not reach the inboxes of intended subscribers in the United States and Canada, according to email management firm Return Path.
The study found emails reached only 79.3 percent of inboxes in the United States and in Canada during the first half of 2009. With the undelivered email, 3.3 percent is routed to a junk or bulk email folder and 17.4 percent is not delivered at all.
Halloween Notice: Spam Zombies Still Feasting On User Inboxes
“Zombies are playing a larger role in spam attacks,” said Andrew Lochart, director of product marketing at Postini. “Spam zombies are popping up all over the world, especially on the newer broadband networks.