Skip to content

WhatsApp's 24-hour reply window

Why you can reply freely for 24 hours after a customer's message, and what to send after that.

1 min read

WhatsApp lets businesses send normal messages only within 24 hours of the customer’s last message. This is Meta’s rule, and it applies to every WhatsApp business.

  • Each new message from the customer opens the window again for 24 hours.
  • The window belongs to one of your numbers. A customer who wrote to your sales number hasn’t opened a window on your support number.
  • If a customer has never written to you, there is no window. You can only send a template.

In the inbox, the reply box counts down the last six hours: “Window closes in 2h 15m”. When the window closes, it says so and offers Send template.

Send a template: a message Meta has approved in advance. When the customer replies, the window opens again and you can write freely.

Messenger and Instagram have the same 24-hour window, but no templates. Once the window closes, you can reply only after the customer writes again.