Had a great question from a customer this morning, about how tracking in emails work. I did some digging around and found some pretty interesting stuff that even I didn’t know about.
In emails an invisible graphic is included at the bottom of HTML emails which are known as web beacons. Each time someone opens the unique graphic it returns the information back to the server monitoring your email campaigns and bang reporting data as an ‘open’. Bounces are tracked by the server, it will get returns about bad emails. Click throughs hit the server’s url that adds an entry to a database and then returns to your actual link… e.g. http://www.server.com?uid=1313&url=http://www.google.com - this concept is used a lot for tracking unsubscribes, forwards, etc…