Short answer: the cost per result on a click-to-WhatsApp ad is the price of a conversation started, and a conversation can be a single "hi". Price the ad by real inquiries instead, chats where the buyer asked about a specific product, a price or shipping, and compare that number with your other lead sources. In the account below, the WhatsApp ad was the cheapest per chat and the most expensive per real inquiry.
I work on Everix, and these numbers came from an exporter of used construction machinery who asked a plain question: is this spend too high? She runs four Meta ads at the same time, one that sends people to WhatsApp and three instant forms, about $120 a day in total. Her sales team counts an inquiry as real when the buyer asks about a machine or a price.
The two columns that disagree
| Ad | Spend | Results | Cost per result | Real inquiries | Cost per real inquiry |
|---|---|---|---|---|---|
| Click-to-WhatsApp, South America | $232.95 | 176 conversations | $1.32 | 8 | about $29 |
| Instant form, English- and French-speaking markets | $263.69 | 31 leads | $8.51 | about 12 (40%) | about $22 |
Read the cost per result column and WhatsApp wins by a factor of six. Read the last column and the form is cheaper. Only 8 of the 176 WhatsApp conversations, under 5%, turned into a question about a machine. The rest were a greeting with no second message, someone looking for a job, or no reply when her team wrote back.
Why the chat is so cheap
A conversation counts as started when the person sends the first message. On a WhatsApp ad that first message can be the text already waiting in the chat box, so one tap on send is a result. Meta then finds more people who tap, and tapping is cheap. A form asks for a name, a number and a few answers before it counts, so fewer people finish, and the ones who do have already told you something.
Make the first message carry information
The first fix is not a different audience. It is making the first message say what the buyer wants. In Ads Manager, at the ad level, an ad with WhatsApp as the destination has a message template section where you can set a greeting and a few question buttons. A tap on a button sends that question as the first message. For machinery that can be "Which tonnage do you need?" and "Which country should it ship to?", so the chat opens with a spec instead of a hi.
Two more filters cost nothing. Say in the ad text that it is for equipment buyers and that you are not hiring, because job seekers were part of her chats. And do not count on an automatic greeting to qualify people. A button the buyer taps is information; a greeting the business sends is one more message the buyer can ignore.
Price every source the same way
- Pick one definition of a real inquiry, for example the buyer named a product, asked a price or asked about shipping, and have the sales team mark it in the chat or the sheet.
- Once a week, per ad: spend divided by real inquiries. That is the number to compare across WhatsApp, forms and anything else you run.
- Move budget toward the lowest cost per real inquiry and cut the most expensive first. A cheap result that never becomes an inquiry is the most expensive line on the sheet.
- When you know your close rate, divide once more: cost per real inquiry divided by close rate is what a deal costs. That is the number to hold against your margin.
The cost per result column prices the event Meta can count. Your sales team prices the event that pays. Put both on one sheet, per ad, and the budget decision usually makes itself.
Where Everix fits
Everix does not run click-to-WhatsApp campaigns. A lane runs on a result Meta records against your goal, a purchase on your site or a lead from an instant form, and the optimizer judges each ad set on that number around the clock: which ones are getting results at what cost, what to pause, and where the next dollar goes. It cannot tell a real inquiry from a junk one by itself; that count still comes from your sales team, and it is the count worth keeping.
Frequently asked questions
- How much does a click-to-WhatsApp ad cost?
- The cost per conversation is often low: in the account above it was $1.32 per conversation started, on $25 a day. The number that matters is the cost per real inquiry. The same ad cost about $29 for each chat where the buyer asked about a product or a price, because under 5% of conversations got that far.
- Are click-to-WhatsApp ads better than lead forms?
- Not by the results column alone. Compare cost per real inquiry. In the account above the lead form cost more per result ($8.51 per lead against $1.32 per conversation) but less per real inquiry (about $22 against about $29), because 40% of form leads were real and under 5% of chats were.
- How do I get fewer "hi" messages from WhatsApp ads?
- Use the ad's message template to add a few question buttons, such as the size or model the buyer needs and where it ships, so the first message carries information. Say who the ad is for in the copy, and judge the ad by real inquiries per week instead of conversations.
- Does Everix run click-to-WhatsApp ads?
- No. Everix runs lanes on results Meta records against your goal: purchases on your site or leads from instant forms. It does not run click-to-message or click-to-WhatsApp campaigns.