Commercial messages on WhatsApp use approved templates, prior consent and conversation windows to regulate when and how a business may contact customers. Respecting these rules is a condition for the channel to work, to avoid blocks and to maintain trust.
The essentials in a definition
Commercial messages on WhatsApp are communications from a business to customers through approved templates, consent and conversation windows, per the service documentation. They require compliance with the GDPR and electronic-communications rules.
The operating framework
WhatsApp Business distinguishes messages that reply to a customer, within a conversation window, from messages the business initiates, which require pre-approved templates and consent. Message types, categories, windows and costs are described in the service documentation and change; always consult the current version.
The flow design should start from these rules, not the other way round.
Consent and data
Obtain clear, recorded consent before sending business-initiated messages, and state the purpose and data handling, in compliance with the GDPR and electronic-communications rules. Always give an easy way to stop receiving messages and respect the request immediately.
Do not acquire contacts of dubious origin.
Messages that are permitted, useful and measured
- Map rules, windows and categories
- Obtain and record consent
- Create clear, specific templates
- Measure replies and blocks
Templates and content
Write clear, useful and specific templates (confirmation, reminder, order update), without excessive promotional tone. Test variants and track reply and block rates. Avoid sending too frequently. Personalise carefully, using only necessary data.
Maintain a human point of contact.
On WhatsApp, message quality decides how long the right to send lasts.
Measure and maintain
Track deliveries, replies, blocks, reports and conversions. If message quality drops, the platform may limit sending. Periodically review templates, lists and consents, and document internal rules.
Train the team on the channel’s rules.
Decision table
| Type | When | Requirement |
|---|---|---|
| Reply to customer | Within the conversation window | Relevance and speed |
| Business-initiated | Outside the window | Approved template and consent |
| Utility | Confirmations and updates | Useful, specific content |
| Promotional | Campaigns | Clear consent and opt-out |
Common mistakes to avoid
- Messages without consent. They breach rules and lead to blocks.
- Excessive frequency. It increases blocks and reports.
- Vague templates. Fewer replies and less trust.
How to measure the result
Track delivery, reply and block rates and conversions by message type.
Limits and exceptions
The service’s rules, categories and prices change and vary by country, and this content is not legal advice. Messages recipients consider unwanted may limit the channel. Always confirm current documentation.
Illustrative example
Illustrative example: a store sends only order confirmations, shipping updates and, to those who consented, monthly offers. It writes objective templates, measures replies and blocks and reduces offer frequency when blocks rise. The channel keeps a good reputation.
In practice: checkpoints
Create a consent register with date, source and purpose, and check it before each send. Write templates with help from someone who does not know the product, to make sure they are understood. Monitor block and report rates, and reduce frequency when they rise. Define who replies to incoming messages, during what hours, and how a case is handed to a person. Review templates every quarter, remove those that do not work and follow changes to the service’s rules, which can affect categories and costs. Keep the tone helpful and brief, put the key information in the first lines and always say who is writing. Test each template with a small group before sending to your entire audience.
Frequently asked questions
Can I send promotional messages to the whole base?
Only with adequate consent and respecting the service’s rules.
What is the conversation window?
The period in which you can reply to a customer with more flexibility; consult current rules.
What happens if many block?
Number quality may drop and sending be limited.
How do I record consent?
With date, source and purpose, stored securely.
Do costs change?
Yes; consult the service’s current price list.
For commercial WhatsApp messages, respect windows, templates and consent, write useful, specific messages and watch replies and blocks.
Sources and recommended reading
- Meta for Developers: WhatsApp Business
- General Data Protection Regulation (GDPR)
- ePrivacy Directive (2002/58/EC)
Last editorial review: October 2026. Informational content; always confirm current conditions in the official sources before deciding.