Email open rate benchmarks can be the good point of view that can potentially tell many informations about the efficiency of sent mass email messages, containing for example offers of products and newsletters. On the Freshmail website we explain, how are the email open rate benchmarks important and how read data from them. This knowledge will be for sure very useful in the everyday work consisting on the mass dispatch the mass messages to great number of receivers. Statistics and data, provided for example thanks to the email open rate benchmarks, can be very useful and can give the detailed info about urgent things.