- I've read that features can be built into emails that report back to the sender what he person who received the email does with it. What's the latest news on that technology?
Several years ago, I read that features can be built into emails that report back to the sender what the person who received the email does with it - at least report whether the email was opened and when this happened. It involved including a tiny picture in the email that would be opened when the email was read. That would somehow report information back to the sender. There were programs (mainly oriented to MS Windows) that advertised giving the email sender this power. Is that technology real? What are the latest developments in it?