- Analyze the reactivity index
The reactivity index is an essential element for the analysis of your campaigns, since it is independent of your opening index. It allows to relativize the opening indexes and clicks to show the intrinsic interest of its content.
- The complaints index
The complaints are the clicks of the recipients on the link «Mark as spam». You should pay close attention, since this index directly affects your reputation. In fact, if 0.01% of complaints are exceeded for an ISP.
- Subscription cancellation rate
We advise you to analyze your subscription cancellation rate with respect to your click-through rate. Typically, the subscription cancellation rate is equal to 1/10 of the click rate.