During a webinar from Adobe, we've learned that with respect to e-mail deliverability we should not exceed more than 20% above the average max volume over the last 3 to 6 months.
We wonder how exactly we should calculate the average max volume of the last 3 to 6 months. Does this imply calculating the average of the maximum during a period of 1 month over the last 6 months. As in: calculate the max of the last 30 days, the max of 30 to 60 days ago, 60 to 90 days ago, etc. and to then calculate the average of those 6 maxima.