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An email list is the rare marketing asset that compounds: subscribers you add this month are still reachable next year, sending traffic and sales whenever you ask. This calculator projects your list honestly, accounting for the unsubscribe rate that quietly leaks subscribers from every list. Enter your current size, your target, typical monthly signups and churn, and it returns the months to target, a 12-month projection, and a straight answer about whether your growth engine is actually outrunning the leak.
An email list compounds: every subscriber you add today is still there (mostly) next year, sending traffic and sales on demand. Enter your current list, target, new signups per month and churn to see how long the climb really takes.
A healthy rate is roughly 2-5% of your current list per month in new subscribers — so a 1,000-list gains 20-50 a month. Faster is possible with a strong lead magnet; slower means the signup ask is missing from your traffic.
Around 1-3% of the list per month is typical. Above that, look at send frequency and usefulness before blaming the audience — and clean inactive subscribers yearly so your rates stay honest.
Churn. At 2% monthly churn, a 5,000-list loses 100 subscribers a month before you add anyone. The calculator shows whether your signups actually outrun the leak — often they do not, and growth needs both more signups and less churn.
Every tool answers instantly from our own knowledge and calculators — no AI wait, no account. Want the deeper, personalised version? Each has a $2.95 full report.