The Federal Communications Commission (FCC) has updated its rules for SMS opt-out keywords, which will take effect on April 11, 2025. Twilio, a company that provides SMS services, has announced that it will add two new keywords, "REVOKE" and "OPTOUT", to its default SMS Stop Filtering service starting May 14th. This means that if a consumer responds with one of these keywords, the message will not be blocked, but rather, Twilio will continue to send messages until the consumer explicitly revokes their consent using one of the new keywords. It is recommended that customers review the specific details of the rules and consult their own legal counsel to determine how this update may impact their business.