The EAC Plugin enable your browser to support the technology Email Active Content developped by AppInMail in various WebMail client.
What is Email Active Content (EAC) Technology ?
It's a way to make your email dynamic & interactive.
Email was designed to be a copy of regular mail :
Static & non interactive.
EAC technology bring the email to its v2.0 by adding features like auto updating, interactivity, security and much more.