WhatsApp monitors message volume as well as quality (see below), and will automatically move customers between tiers based on the total number of unique business conversations across the past 7 days. If the Sender reaches the messaging limit, more conversations can be started as soon as one or more active conversation ends. An unlimited number of business-initiated conversations in a rolling 24-hour period.Įvery new WhatsApp-enabled Sender is initialized a s being allowed 1000 business-initiated conversations with unique customers in a rolling 24-hour period.100K business-initiated conversations with unique customers in a rolling 24-hour period.10K business-initiated conversations with unique customers in a rolling 24-hour period.1K business-initiated conversations with unique customers in a rolling 24-hour period.Here are the four messaging limit levels: Learn more here: Twilio WhatsApp Sandbox Limitations. There is a limit of one request every 3 seconds with the Sandbox number at this time, and should only be used for testing out your integration or the WhatsApp Business API features in general. Note: If you are seeing an API response with error 63018 and message 'Account ' exceeded the 1 rps rate limit' when sending multiple WhatsApp Messages at once, please ensure you are not still using the Twilio Sandbox number (whatsapp:+14155238886) to send your messages. For more information on those limits and how to complete verification see our Self Sign-Up Overview and FAQ.

Note: Users who sign-up for WhatsApp using Self Sign-Up may experience a lower limit initially until Meta Business Verification is completed. In this context, a customer is a unique WhatsApp end user phone number. For these approved and enabled customers, WhatsApp has imposed rate limiting when ramping up your Twilio WhatsApp messaging application.ĭue to these rate limits, Twilio recommends customers intending to initiate more than 1000 conversations with unique customers to gradually roll out their WhatsApp launch over the course of a week. Once you complete the WhatsApp approval and onboarding process, your Twilio phone number will be enabled for WhatsApp.

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