5 calculators
Email Marketing calculators
Email is measured in revenue per send, not open rate. Value a subscriber, value the list, size the return on a campaign, and check whether sending more often actually earns more.
Email Marketing ROI
email ROI
Find out exactly what your email program is returning for what it costs to run.
Email ROI = (Revenue from Email − Program Cost) ÷ Program Cost × 100
Subscriber Lifetime Value
subscriber LTV
Find out how much one email subscriber is worth over their entire time on your list.
Subscriber LTV = Revenue per Email × Emails per Month × Lifespan (months)
Email Send-Frequency Revenue Impact
send-frequency impact
See whether sending one more email a week is actually worth the unsubscribes it costs you.
Net Impact = Revenue from One Additional Send − (List Size × Unsubscribe Rate from the Extra Send × Value Lost per Unsubscribe)
Email List Growth Value
list growth value
Turn this month's new subscribers into a projected annual revenue figure.
Annual Growth Value = New Subscribers This Month × Average Annual Revenue per Subscriber
A/B Subject Line Significance
subject line significance
Find out if your subject line test result is real, or just noise.
Z = (p₁ − p₂) ÷ √(p̂(1−p̂)(1/n₁ + 1/n₂))