WhatsApp is rolling out a feature that allows users to block messages from unknown accounts, currently available to beta testers on Android. This feature can be found in the Advanced section of privacy settings and is activated when the volume of messages from unknown senders exceeds a certain threshold, ensuring that important communications from business accounts are not interrupted. The feature is in the testing phase, with the beta version 2.24.20.16 accessible to a select group of users, and WhatsApp plans to expand access in the coming weeks. Users can join the beta testing program via the Google Play Store.