The Twilio team has launched a new API and Console experience for Sole Proprietor registration in the US, allowing hobbyists and small businesses without an Employer Identification Number (EIN) to register campaigns via Sole Proprietor API or Twilio Console. This move aims to provide compliance with industry regulations and create a fully verified messaging ecosystem to combat bad actors and unwanted messages. The new path is designed for solo developers, US and Canadian businesses without an EIN, and independent software vendors who have customers in these categories. To register, users must pass a two-step validation process, including data validation and OTP phone verification, with specific requirements such as a maximum of 1000 msg/day limit per campaign and passing a one-time password verification request.