WhatsApp automation for business is allowed within Meta’s rules for the WhatsApp Business Platform. You can send free-form automated replies only while a 24-hour customer service window is open. Outside that window you can send only pre-approved template messages, and only to people who have opted in. Meta bills per message, and from 1 October 2026 it charges again for service messages beyond a free allowance. All rules below were checked on Meta’s own pages on 14 November 2026.
This guide sets out what the rules let you automate and what they do not. It is not legal advice. If you want to connect WhatsApp to your CRM, sheets or order system, our AI automation services team can look at the workflow, and the rules below decide what is possible.
The rules at a glance
These apply to the WhatsApp Business Platform, the API route for developers. Meta’s platform overview says its documentation is for developers using its APIs, and points to a separate site for other ways to use WhatsApp for business.
| Rule | What Meta’s documentation says | Source |
|---|---|---|
| Opt-in | A person must opt in to receive messages from your business. The opt-in must clearly say so and name your business. You choose the method, such as a website, SMS, a phone menu or paper, and it can be general rather than specific to WhatsApp. | Get opt-in |
| Customer service window | A 24-hour timer starts when a user messages or calls you. A new message from the user resets it to 24 hours. While it is open you can send non-template (service) messages. | Service messages |
| After the window closes | You can only send pre-approved template messages. | Service messages |
| Template review | Each template is reviewed automatically when created or edited, and is sent only once approved. Review can take up to 24 hours. | Template fundamentals |
| Template categories | Every template is marketing, utility or authentication. Meta can recategorise a template it judges to be in the wrong category. | Template categorization |
| Marketing limits | WhatsApp may limit how many marketing templates a user receives from any business, based on their engagement. Marketing templates are not delivered to US phone numbers. | Per-user limits |
| Messaging limits | Limits count unique users messaged outside a service window in 24 hours. New business portfolios start at 250 and can rise to 2,000, then 10,000, 100,000 and unlimited. | Messaging limits |
| Enforcement | Repeated policy violations lead to warnings, then blocks of 1 to 30 days on sending, then a lock or permanent removal. | Policy enforcement |
What you can automate
- Replies inside the window. When a customer messages you, an automated workflow can send free-form answers while the 24-hour window is open: order status, appointment confirmation, opening hours, a document. Meta lists text, images, documents, location and interactive messages with reply buttons among the message types allowed in the window.
- Transactional updates by template. Order shipped, payment received, appointment reminder. These are utility templates. Meta says a utility template is typically triggered by a user action or request, must be non-promotional, and must relate to the user’s order, account or services.
- One-time passcodes. Only authentication templates can send a one-time passcode.
- Marketing templates to people who opted in. Allowed, but subject to the per-user limits above and billed at the marketing rate.
- Hand-off to a person. A workflow can tag the message, notify your team and log it in your CRM, so a person takes over when the question is not routine.
What you cannot automate
- Messages to people who have not opted in. Opt-in is the base rule.
- Free-form messages after the window closes. Only approved templates are allowed then.
- Promotions dressed up as utility messages. Meta’s documentation says a template with mixed or unclear content counts as marketing, and it can recategorise a utility template to marketing after one day’s notice.
- Marketing templates to US numbers. Meta says it does not currently deliver them, and sending one returns an error.
- Repeat sends to a person who reached their marketing limit. The message fails with error 131049, and Meta advises waiting at least 24 hours before resending.
- Ignoring opt-outs. Meta tells businesses to give clear opt-out instructions and honour the requests. Users can also block and report a business, and low quality can lead to rate limits.
How WhatsApp automation for business is priced (checked 14 Nov 2026)
Pricing rules changed in 2025 and again in 2026, so older guides may be wrong. Meta’s pricing page says conversation-based pricing was replaced by per-message pricing on 1 July 2025. Businesses are charged only for delivered messages, and users are never charged for messages they send.
| Message | Charged? | From when |
|---|---|---|
| Marketing, utility or authentication template | Yes, per delivered message at the rate for the category and country | Per-message billing since 1 July 2025 |
| Service message (free-form, inside the window) | The first 1,000 per business phone number each month are free. Meta charges from the 1,001st. Free messages do not roll over. | Charging resumed 1 October 2026 |
| Utility template sent inside an open window | Yes, per message | Charging resumed 1 October 2026 |
| Messages inside a free entry point window | Not charged, except Meta Business Agent messages. The window opens when a user messages from a Click to WhatsApp ad and you reply within the service window. Meta’s pricing page says it can stay open up to 7 days. | Current |
| Messages from users to you | Not charged | Current |
Two more points from the same page. India is a standalone market with its own rate card, and Meta raised the India marketing rate on 1 January 2026. The page links the actual rates as downloadable files, and we do not copy rates here because they change. Meta also says it may change pricing only on 1 January, 1 April, 1 July or 1 October, so the next possible change is 1 January 2027. Meta’s announcement on service and utility messages has the 1 October 2026 details.
AI-written replies on WhatsApp
Meta’s pricing page says service messages can be powered by a third-party AI solution or by people, such as customer service staff. So an AI-drafted reply sent inside the window is still a service message. Separately, Meta has a policy for AI providers, which its AI providers pricing page defines as providers and developers of AI or machine-learning technologies, with general-purpose AI assistants as the example. That policy sets its own charges in some markets, and Meta says it does not change how other businesses on the platform are charged. If you are unsure which rule covers your set-up, ask your WhatsApp provider or Meta support before you rely on it.
Whatever you choose, keep a person in the loop for anything that is not routine. Our post on AI agents for business covers where to put the approval step.
Checklist before you automate
- Collect opt-in with wording that names your business and says people will receive messages. Store when and how each person opted in.
- Offer an easy way to stop messages, and honour it in every workflow.
- List your messages by type: reply, transaction, reminder, promotion. Write each template with its honest category.
- Check which countries your customers are in. Marketing templates do not reach US numbers.
- Work out your monthly volume of service messages per phone number against the 1,000 free allowance.
- Plan a hand-off to a person, with notes saved to your CRM.
- Log every automated message, so you can see what was sent and why.
- Read Meta’s policy links on its enforcement page before launch, and ask a lawyer about consent law in your markets.
Many of these steps depend on your existing tools. Our CRM solutions page covers CRM work, and automations can write WhatsApp activity back to it.
Frequently asked questions
Can I automate WhatsApp messages from the WhatsApp Business app?
The rules in this guide are for the WhatsApp Business Platform, the API route. Meta describes the app as a separate route to using WhatsApp for business. Check Meta’s own app terms for what the app allows.
Can I message customers who have not messaged me first?
Only with an approved template and only if they have opted in. Meta says the opt-in must clearly state that the person is opting in to receive messages from your business, and must name the business.
How long can I send free-form replies?
For 24 hours after the customer’s last message or call. Each new message from them resets the timer to 24 hours.
Are automated replies free?
Messages from users to you are free. For service messages, the first 1,000 per business phone number each month are free and Meta charges from the 1,001st. Templates are charged per delivered message. Check the pricing page for current rates.
Can an AI write the replies?
Yes, inside the 24-hour window. Meta says service messages can be powered by a third-party AI solution or by people. Meta has a separate pricing policy for AI providers, so check how your set-up is classified, and keep a person in the loop for non-routine cases.
What happens if I break the rules?
Meta warns first, then blocks sending for 1 to 30 days, then locks the account. Repeated violations can lead to permanent removal. Not every spam violation can be appealed.
Tell us what you want to automate
Tell us which WhatsApp messages you send today, to whom and how often. We will check them against the rules above and reply with a view on what to automate first, a pilot plan and a written quote. Tell us what you want to automate.
