To communicate with customers on WhatsApp via the Official API, your business must adhere to Meta's 24-hour window policy. With Papo (https://papo.global/), you can freely respond to customer messages within this period. Once the window closes, communication can only be reinitiated by the business using pre-approved Message Templates (HSM), ensuring consented communication and preventing spam.
The 24-hour window policy is a fundamental rule of the WhatsApp Business Platform (Official API) designed to protect users from unwanted messages and ensure a high-quality experience. Understanding how it works is essential for maintaining an effective and compliant communication channel.
What is the 24-Hour Customer Service Window?
The 24-hour customer service window is a period that begins as soon as a customer sends a message to your business's WhatsApp number. Within this window, your team can respond with free-form messages, meaning texts, audio, images, and documents, just like in a normal conversation, without additional per-message cost from Meta.
The main characteristic of this window is that it resets with each new message sent by the customer. For example, if a customer sends a message at 10:00 AM, you have until 10:00 AM the next day to respond. If they send another message at 3:00 PM on the same day, the window is extended, and you will have until 3:00 PM the next day to continue the conversation freely.
The goal of this Meta policy is to encourage businesses to respond quickly, promoting agile and contextual customer service.
What Happens When the 24-Hour Window Closes?
After 24 hours from the customer's last message, the customer service window closes. From that moment on, the business can no longer send free-form messages to that contact. Any attempt to send a regular text message will result in failure.
To restart the conversation or send a proactive notification (such as a delivery alert or a promotion), the business is required to use a Message Template, also known as an HSM (Highly Structured Message). These templates are pre-approved message formats by Meta and are the only permitted way for a business to initiate a conversation with a customer.
The table below summarizes the main communication differences inside and outside the window:
| Characteristic | Within the 24h Window (Customer-Initiated) | Outside the 24h Window (Business-Initiated) |
|---|---|---|
| Message Type | Free-form (text, media, audio, etc.). | Only pre-approved Message Templates (HSM). |
| Purpose | Customer service, support, reactive sales. | Notifications, alerts, marketing, reminders (proactive communication). |
| Cost (Meta) | Generally included in the conversation session fee. | Charged per business-initiated conversation, based on the template. |
| Initiator | Conversation is kept open by the customer. | Conversation is initiated or reinitiated by the business. |
How Does Papo Help Manage This Rule?
The Papo platform is designed to simplify the management of the 24-hour window and the use of Message Templates, ensuring your operation remains compliant.
- Unified Inbox: In Papo's Conversations module, your team can see all interactions and respond freely to customers while the 24-hour window is active. The interface signals when a conversation is open for free responses.
- Sending Message Templates (HSM): When the window closes, the Papo platform allows the agent to select one of your Meta-approved HSMs to re-engage the customer. These templates, once created in Meta's Business Manager, are synchronized and become available for use directly on the conversation screen.
- Bulk Campaigns: For proactive sends, such as marketing campaigns or mass notifications, Papo's Campaign Sender module exclusively uses Message Templates. This ensures that all sends to customers with whom there is no active conversation window are made in accordance with WhatsApp policies.
Frequently Asked Questions (FAQ)
What happens if a customer responds to a Message Template (HSM)?
When a customer responds to an HSM sent by your business, it initiates a new 24-hour customer service window. From that moment on, your team can freely converse with them for another 24 hours, without the need to use other templates.
Do I need consent (opt-in) to send Message Templates?
Yes. WhatsApp policy requires you to obtain prior, clear, and explicit consent (opt-in) from the customer before sending proactive messages, especially marketing ones. Sending messages without permission can lead to high reporting and blocking rates, which puts your number at risk of being banned by Meta.
Are all messages outside the 24-hour window paid?
Business-initiated conversations using a Message Template (HSM) have an associated cost defined by Meta. This charge is per "conversation" (a 24-hour session) and not per individual message. Prices vary according to the template category (Utility, Authentication, or Marketing) and the recipient's country. Pricing details are managed by Meta.
How do I create a Message Template?
Message Templates must be created and submitted for approval directly in Meta's Business Manager (Facebook Business Manager). Once approved, they are automatically synchronized with your Papo account and become available for use in inboxes connected to the Official WhatsApp API.
Does the 24-hour window apply to all channels or only to WhatsApp?
This 24-hour window policy is specific to the WhatsApp Business Platform (Official API). Other communication channels you can connect to Papo, such as Instagram, Facebook Messenger, Email, or Telegram, have their own communication rules and policies.
Read also
- Creating and Sending Message Templates (HSM) for WhatsApp
- My WhatsApp number was banned. Can Papo help me?
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