Price a newsletter sponsorship from subscriber count, open rate and a target CPM.
Newsletter inventory is priced on opens rather than subscribers, because an unopened email reaches nobody. Revenue per subscriber per year is the figure to track, since it shows whether the list is monetising as it grows. Pricing on list size rather than opens overstates the audience by the whole unopened share, which is usually more than half.
Newsletter Sponsorship
Slot price = opens ÷ 1,000 × target CPM
Slot price = opens ÷ 1,000 × target CPM Newsletter inventory is priced on opens rather than subscribers, because an unopened email reaches nobody. Revenue per subscriber per year is the figure to track, since it shows whether the list is monetising as it grows.
Pricing on list size rather than opens overstates the audience by the whole unopened share, which is usually more than half.
This calculator takes 5 inputs: Subscribers, Average open rate, Target CPM on opens, Sponsor slots per issue, Issues per month. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.