Coming into the marketing world as a university graduate, I knew what an EDM, open rate and click through rate was, but didn’t quite understand how it all worked. Last week I got a pleasant surprise when I went to analyse two EDMs sent out for a client and saw a whopping 63.6% open rate and 6.1% click through on one, and a 55.2% open rate and 13% click through on the other. I was shocked. I started checking everything, thinking I had somehow made a mistake and only sent it to a small database, or was looking at the wrong numbers. No, it was legit.