Reaching out to customers through email has been, and continues to be, the most effective marketing tool available to business owners. Nearly everyone who uses the Internet also uses email, making it a perfect means of reaching customers. Now with mobile phones' popularity soaring, your message can reach them anywhere and everywhere. Especially as smartphones and tablets gain traction with the mainstream public, email as a marketing tool needs to be re-evaluated. As of late 2011, more than 50