Understanding the WhatsApp 24-Hour Customer Service Window
If you use WhatsApp to communicate with customers through the WhatsApp Business Platform, there are important rules that determine when you can send messages and what type of message you can use.
The most important concept to understand is the 24-hour customer service window.
This window determines whether you can send a free-form message to a customer or whether you need to use an approved WhatsApp message template.
How does the WhatsApp 24-hour window work?
The 24-hour customer service window starts when a customer sends your business a message.
Once the customer has contacted you, you can reply with free-form messages during the following 24 hours.
For example:
A customer sends you a WhatsApp message at 10:00 AM on Monday.
From that moment, you have a 24-hour customer service window in which you can respond using normal, free-form messages.
You can send multiple messages during this period without having to use a message template.
The 24-hour window resets when the customer replies
The 24-hour window is based on the customer's latest message.
If the customer sends another message before the current window expires, a new 24-hour window starts from that message.
For example:
Customer sends a message at 10:00 AM → 24-hour window starts.
Customer replies again at 4:00 PM → a new 24-hour window starts.
Customer sends another message the following morning → the window starts again from that latest message.
As long as the customer continues to engage with your business, you can continue responding with free-form messages during the applicable customer service window.
What happens after 24 hours?
If the customer hasn't sent you a message for 24 hours, the customer service window closes.
Once the window has closed, you can no longer send a normal free-form message to that customer through the WhatsApp Business Platform.
Instead, you need to use an approved WhatsApp message template.
This rule is designed to help prevent unwanted messages and protect WhatsApp users from spam.
Example
Imagine that a customer contacts your business on Monday at 10:00 AM.
If the customer doesn't send another message by Tuesday at 10:00 AM, the 24-hour customer service window closes.
If you want to contact that customer after the window has closed, you need to use an appropriate approved message template.
What is a WhatsApp message template?
A WhatsApp message template is a pre-approved message that can be used to contact customers outside the 24-hour customer service window.
Instead of sending any free-form message, your business uses a message template that has been submitted and approved for use on the WhatsApp Business Platform.
Templates help WhatsApp control business-initiated messaging and reduce the risk of unwanted or spam messages.
Templates can be useful for situations such as:
Following up with a customer after the 24-hour window has closed.
Sending a notification or update.
Starting a conversation with a customer.
Sending a reminder.
Sharing information that a customer has requested.
The template must be approved before it can be used for business-initiated messaging outside the customer service window.
When do I need a WhatsApp template?
You generally need an approved template when the 24-hour customer service window has expired and you want to send a new message to the customer.
You may also need a template when starting a new business-initiated conversation with a customer.
A simple way to remember the rule is:
Customer messages you → 24-hour customer service window → free-form replies are available during the window.
24-hour window expires → use an approved template to initiate a new business message.
Free-form messages vs. WhatsApp templates
Understanding the difference between these two types of messages is essential when using WhatsApp Business.
Message type | When to use it |
|---|---|
Free-form message | When responding within the active 24-hour customer service window. |
WhatsApp message template | When initiating a business conversation or messaging after the applicable 24-hour window has closed. |
Free-form messages
Free-form messages allow you to communicate naturally with customers. You can respond to questions, provide support, clarify information, and continue the conversation as you normally would.
WhatsApp message templates
Templates use pre-approved content and are required for business-initiated messages outside the customer service window.
For example, if a customer contacted you yesterday but hasn't replied for more than 24 hours, you cannot simply send:
"Hi! Just checking if you still need help."
Instead, you need to use an appropriate approved WhatsApp template.
Why does WhatsApp have a 24-hour window?
The customer service window is designed to give customers control over business communications and reduce unwanted messages.
It creates a distinction between:
Customer-initiated conversations, where a customer has recently contacted your business and you can respond within the customer service window.
Business-initiated conversations, where your business wants to contact a customer without a recent customer message.
The second type of communication requires an approved template when the customer service window is no longer active.
What happens when a customer replies to a template?
If you send an approved template and the customer responds, you can continue the conversation using free-form messages during the resulting customer service window.
This allows you to move naturally from a business-initiated message into a regular customer service conversation.
How this works in Saysimple
When managing WhatsApp conversations in Saysimple, it's important to keep the 24-hour customer service window in mind.
When a customer sends a WhatsApp message, you can respond through the conversation using free-form messages while the customer service window is active.
If the window has expired, you need to use an approved WhatsApp template to re-engage the customer.
Understanding this distinction helps your team know when to reply normally and when a template is required.
Best practices for WhatsApp customer conversations
To manage WhatsApp conversations effectively:
Monitor the 24-hour window after a customer sends a message.
Respond to customer questions within the active customer service window whenever possible.
Use approved WhatsApp templates when the customer service window has expired.
Create templates for common follow-ups, reminders, notifications, and business-initiated conversations.
Make sure your templates are appropriate for their intended use.
Avoid sending unsolicited or irrelevant messages.
Frequently Asked Questions
What is the WhatsApp 24-hour customer service window?
The WhatsApp 24-hour customer service window is the period following a customer's message during which your business can respond with free-form messages.
When does the 24-hour WhatsApp window start?
The window starts when a customer sends a message to your business through WhatsApp.
Does the 24-hour window reset when the customer replies?
Yes. When the customer sends another message, the applicable customer service window is refreshed from that customer interaction.
What happens when the 24-hour WhatsApp window expires?
Once the customer service window has expired, you need to use an approved WhatsApp message template to send a new business-initiated message.
Can I send free-form WhatsApp messages after 24 hours?
No. Once the applicable customer service window has closed, you need to use an approved message template rather than a free-form business message.
What is a WhatsApp message template?
A WhatsApp message template is a pre-approved business message that can be used for specific messaging scenarios, including business-initiated messages outside the customer service window.
When do I need a WhatsApp template?
You need an approved template when you want to send a business-initiated message after the customer service window has closed. Templates can also be used to initiate a new business conversation.
Can I start a WhatsApp conversation with a new customer?
Yes, but business-initiated messaging requires the appropriate approved WhatsApp message template rather than an unrestricted free-form message.
Can I reply normally when a customer contacts me?
Yes. While the customer service window is active, you can respond using free-form messages.
What happens if the customer replies after I send a template?
The customer's reply opens the applicable customer service window, allowing you to continue the conversation with free-form messages.
Why does WhatsApp require message templates?
Templates help protect WhatsApp users from unwanted business messages and spam by requiring businesses to use approved messaging content for business-initiated communication outside the customer service window.
How can I manage WhatsApp customer conversations in Saysimple?
You can manage your WhatsApp conversations directly in Saysimple. Keep track of customer replies and the applicable customer service window, and use approved WhatsApp templates when a new business-initiated message is required.
Key Takeaways
The WhatsApp customer service window is essential to understand when managing customer conversations through the WhatsApp Business Platform.
A customer message starts the 24-hour customer service window.
You can use free-form messages while the applicable window is active.
A new customer message refreshes the applicable window.
After the window closes, you need an approved WhatsApp message template for a new business-initiated message.
Templates help businesses communicate with customers while reducing unwanted messages and spam.
Understanding these rules helps your team manage WhatsApp conversations effectively and know when to use free-form replies or templates.