By CLAIRE CAIN MILLER
Changes to Gmail are challenging e-commerce marketers this holiday shopping season, by cloaking information about who opens retailers’ emails and driving down the number of people who open them in the first place.
Published: December 17, 2013 at 12:00AM
from NYT Technology http://bits.blogs.nytimes.com/2013/12/17/fewer-gmail-users-are-opening-retailers-messages-this-shopping-season/
via IFTTT