Currently, it is not possible to block users from sending messages to your Twilio-enabled WhatsApp sender.

WhatsApp is intended to facilitate conversations between end users and businesses, and allow you to seamlessly transition between notifications and customer care.

In the unlikely case that you are receiving a high volume of unwanted messages, or you believe users are sending malicious or abusive traffic to your WhatsApp sender, please let us know by contacting our Support team.