Email Campaign Profit Calculator

How it is calculated

Campaign profit is the contribution the send generated less what it cost to produce and less the future value of the subscribers it lost.

Profit = (orders × contribution per order) − production cost − (unsubscribes × subscriber lifetime contribution).

The third term is the one nobody includes, and on an aggressive campaign it can exceed the first.

Numbers on it

24 orders at $31.90 is $765 of contribution. Production cost for the campaign, at four hours of time, is $180.

59 unsubscribes at $3.38 of annual contribution each is $199 of future value destroyed.

Campaign profit is $765 − $180 − $199 = $386.

A more aggressive discount campaign producing 40 orders but 200 unsubscribes: contribution falls to $850 at a reduced margin, cost stays $180, and lost future value is $676, profit of −$6. More orders, less money.

What it does not tell you

Attributed orders include purchases the recipient would have made anyway, so contribution is overstated unless incrementality has been measured.

The subscriber lifetime figure is also an estimate, and using an annual rather than a multi-year value is the conservative choice, a longer horizon makes unsubscribes look even more expensive.

What follows from it

Price unsubscribes into every campaign assessment. It changes which campaigns look successful and it is the discipline that stops a programme discounting its way through its own list.

Then compare campaign types on profit rather than revenue. Newsletters frequently produce less revenue and more profit than promotions once the churn cost is counted.

Why the churn cost changes the strategy

A campaign that generates revenue by exhausting goodwill is borrowing from future sends, and the arithmetic makes the loan visible. On the numbers above, an aggressive campaign converted $386 of profit into nothing while appearing to perform better.

Run monthly, that pattern shrinks the list, raises the acquisition burden, and eventually forces more aggressive campaigns to hit the same revenue, a spiral that is obvious in retrospect and invisible in any single campaign report.

The programmes that compound are those where most sends give something before asking for something, so the list tolerates the promotional ones. That is a content strategy with a directly calculable financial justification, which is unusual and worth using in the argument.

Discount depth deserves the same treatment as unsubscribes, since a campaign generating orders at a 30% discount is selling contribution it already had rather than creating new demand.

Comparing a promotional send against the same period's baseline sales is the only way to see how much of it was incremental.

Running the calculation retrospectively across a quarter usually identifies one or two campaign types that consistently destroy value, which is a more useful finding than any single campaign's result.

Comparing a promotional campaign against the equivalent week without one is the cleanest available test of whether it created demand or pulled forward demand that existed, and the answer is frequently the second.

Production time also falls with repetition, so a campaign format run monthly costs materially less by its third outing than a bespoke one built from scratch each time.