Friday, 7.40pm. An enquiry lands on WhatsApp: "Hi, can you quote for a heat pump survey on a three-bed semi?" Nobody sees it. Monday at 9.10am someone opens the inbox, types a reply and hits send. The text box is locked. In its place sits a dropdown with three templates approved eight months ago, none of which answers the question.
That is where most businesses discover what a WhatsApp template is, and always at the worst possible moment. So, plainly: when they cost nothing, when they cost money, what changes in two months, and why Meta rejects the ones it rejects.
The 24-hour window sets the rules
When a customer messages you, a 24-hour customer service window opens. Inside it you write whatever you like, in whatever words. Once it closes, the only way to reopen the conversation is a template Meta approved in advance: fixed text with slots for variables like {{1}}, reviewed by Meta and filed under one of three categories — marketing, utility or authentication.
A template is not a message format. It is a key. And the key has a price.
When you pay nothing
First, a correction to something we wrote ourselves. Meta's own documentation now states: "Effective July 1, 2025, Meta charges on a per-message basis." The 24-hour conversation charge is gone; billing is message by message. If you have read otherwise — including in our own API guide — that is out of date.
Under the current model, and as things stand today, you do not pay for:
- Free-form replies inside the 24-hour window. These are service messages, and they have been free in every market since 1 November 2024.
- Utility templates sent inside that open window. Meta's wording: "Utility template messages sent within an open customer service window are free."
- Everything inside the 72-hour free entry point window. If the customer arrives from a Click to WhatsApp ad or a Facebook Page call-to-action button and you reply within 24 hours, a 72-hour window opens in which every message is free, templates included.
Almost nobody uses that last one properly. If you are already paying for ads that land in WhatsApp, you get three days of free messaging per person who writes to you — including the Tuesday nudge about the quote you sent on Sunday.
When Meta does charge
Every marketing template is charged, with no exceptions and no volume discount. Utility and authentication templates are charged when they go out with no window open, and those do get volume tiers.
The rate depends on the recipient's country, not yours. A practical warning while researching this piece: we looked up the marketing rate for one European market and found three different figures on three provider websites, two in dollars and one in euros, none of them matching. It is not bad faith — each provider adds its own margin and exchange rate. The only figure worth budgeting against is Meta's official rate card, published as a downloadable CSV per currency (GBP and EUR both exist) on its pricing page. Download it, find your market, then compare it with what your provider actually invoices.
What changes on 1 October 2026
This matters if you are budgeting for Q4.
On 1 July 2026, alongside the launch of its Meta Business Agent platform, Meta announced that service conversations stop being free on 1 October 2026 and will be billed per message at the same rate as utility and authentication. The notices circulated by providers add that utility templates inside the 24-hour window will start being charged too. Meta has said it will publish per-country rates before 1 September 2026 — they are not out yet, so any specific number you see quoted today is somebody's estimate.
One uncomfortable detail worth saying out loud: according to those same notices, a free-form reply answered by a human or by a third-party AI is billed as a service message, whereas one answered by Meta's own agent is billed under its token model. Zatio is third-party AI. We are in the first group, not the second.
Two honest checks: as of 1 August 2026, Meta's public pricing page still says service conversations are free for all businesses, and every notice agrees the 72-hour free entry point window is unaffected. Re-read the rate card in September before you commit to anything.
The five reasons your template gets rejected
Now the part that burns the most time. Review usually completes within 24 hours. The rejections repeat.
1. Wrong category. A promotion dressed as a notification either fails or gets reclassified as marketing — and the price changes by an order of magnitude. Since 9 April 2025 Meta validates the category during review itself. If you think it got it wrong, you have 60 days from creation, or from the recategorisation, to request a review.
2. Dangling variables. A template cannot start or end with a variable, cannot place two side by side, and cannot skip the numbering ({{1}}, {{2}}, {{4}} fails). "{{1}}, your appointment is confirmed" is rejected; "Hi {{1}}, your appointment is confirmed" passes. Since 1 October 2025 these templates are not even created — you get an error straight away.
3. Samples that do not match. Every variable needs a realistic sample value. If {{1}} is a name, the sample is "Sarah", not "xxx" and not a URL.
4. Suspicious links. Shorteners, wa.me links and domains that are not yours read as phishing. Use your own domain.
5. Formatting and tone. Shouty capitals, manufactured urgency, trailing line breaks, odd characters pasted in from Word. Run it through a plain text editor first.
And one that arrives after approval: if people block or report, Meta pauses the template. Three hours the first time, six the second, and on the third strike it is disabled for good.
What templates do not solve
Worth being blunt, because they get sold as a fix.
They do not get replies, they reopen a channel. A template restores your right to write. Whether the customer answers depends on whether their problem is still live on Monday, and often it is not.
Meta's approval is not legal permission. Different things entirely. In the UK, PECR still requires consent for electronic direct marketing unless the narrow soft opt-in applies — and the stakes went up: the Data (Use and Access) Act 2025 raised the maximum PECR fine from £500,000 to £17.5m or 4% of global turnover, and the ICO has confirmed the new powers apply to conduct after 5 February 2026. In January 2026 the ICO fined Allay Claims Ltd £120,000 and ZMLUK Limited £105,000 over unlawful marketing messages. Meta approves your wording; consent is still your problem.
They do not fix the underlying issue. The cheapest template is the one you never needed because you answered inside the window. That holds today, and it will still hold in October even once in-window replies become chargeable — the utility rate sits well below the marketing rate.
They are not personalised. Only the variables change. That is the whole of it.
We handle registration, verification and templates so nobody on your team has to open Business Manager — that is the WhatsApp integration page. And because the agent replies inside the 24-hour window, in practice you need templates a good deal less often. Not magic: just getting there before the window shuts.