See whether your WhatsApp campaign will make money — before you send it

An ROI model is only as honest as its inputs. The defaults in this calculator are deliberately ordinary — a 95% delivery rate, an 85% read rate, a 12% click-through and an 8% conversion — but they are placeholders, not benchmarks. If you have run even one broadcast before, open its report and copy the real numbers in: your actual delivered percentage, the read rate your list produced, and the click-through your last offer earned. A model fed with your own history is a forecast; a model fed with optimistic guesses is a wish.

Once real numbers are in, use the funnel chart to find the stage that leaks the most. Most teams instinctively reach for a bigger audience, but volume is the weakest lever in the model: doubling sends roughly doubles messaging cost alongside revenue, so ROI barely moves. The levers that change the answer are the ratios, and the conversion step — what happens after the click — usually dominates. A landing page that loads slowly on mobile data, an offer that needs three taps to redeem, or a checkout that asks for information twice will quietly halve your orders while every upstream number looks healthy. Before spending more on reach, spend an afternoon on the page your button points to.

• Weak delivery usually means a stale list — re-verify opt-ins and remove inactive numbers before the next send.
• Strong reads but weak clicks point at the message itself: tighten the offer and make the button the obvious next step.
• Strong clicks but weak orders almost always indict the landing step, not the campaign.

Finally, be careful attributing revenue. Some of the people who ordered after your campaign would have ordered anyway. The clean fix is a holdout: randomly exclude a small slice of your audience — 5-10% is common — send them nothing, and compare order rates between the two groups afterwards. The difference is the lift your campaign actually caused, and that lift is the revenue figure that belongs in this calculator. It feels painful to withhold messages from paying customers, but it is the only way to know whether your campaigns are creating demand or merely taking credit for it.