@danielmcclure on Twitter: ""Gmail’s tweak won’t stop e-mail marketers from knowing if you open their e-mail" http://wapo.st/1j2SMXU #EmailMarketing"

Last Updated: December 13, 2013

“Gmail’s tweak won’t stop e-mail marketers from knowing if you open their e-mail” http://wapo.st/1j2SMXU #EmailMarketing

Source

https://twitter.com/danielmcclure/status/411523423383609344