PPM or Profit Per Thousand is one of the best metrics to use when analyzing the success of an email send. It gives you a very accurate look at how the email promotion performed by calculating the revenue earned for every 1000 emails. (The M in PPM or RPM stands for Mille – a French word for 1000). The formula for calculating PPM/RPM is Revenue / (Emails Delivered / 1000).
Profit Per Thousand, Revenue Per Thousand, RPM