Chrome Safari: Streak, an email organization suite for Gmail, unveiled message tracking today. Now, it integrates with Gmail (or Google Apps), pops up a message to let you know when a message has been read, and offers a timeline view so you can see who's read it, when, and on what devices. Best of all, it's free.
Y si te ha gustado esta tsNews! dale un Up! para que otros lectores va lean ! .. vamos !