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Email Header Tips to Get Your Message Opened
http://cdemails.com/articles/6290/1/Email-Header-Tips-to-Get-Your-Message-Opened/Page1.html
Silverpop Systems Inc.
Silverpop is a leading provider of permission-based email marketing solutions, strategy and services.  
By Silverpop Systems Inc.
Published on 08/18/2009
 
Tweets. Pokes. Tags. It's as if anything that reads more than 140 characters in length (spaces included) these days is deemed Tolstoyesque. (This opening line comes in at 139, btw.)

We're living in a time when microscopic attention spans are the norm. And the need for bold, meaningful email headers has never been more important for engaging your recipient base. So don't let your header be a last-minute design consideration.