As retailers ramped up e-mail volume in the closing weeks of the 2008 holiday shopping season, open and click rates showed a corresponding dip, according to a study just released by marketing services provider Epsilon.
However, click-to-conversion rates during the week prior to Christmas were higher than click-to-conversion rates during the 12 previous weeks and during Christmas week, according to the study of more than 640 million e-mails from Oct. 1 through the end of December.
In other findings, the study determined that retail e-mails
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