Sending Securely: SendSafely Uses Twilio Two Factor Authentication To Ship Files` SendSafely is a file-sharing company that prioritizes security, encrypting all user files to protect sensitive data. The company uses Twilio's two-factor authentication to add an extra layer of protection to its users' accounts. When sending files, SendSafely generates a client key for the sender and a server key for the recipient, allowing for secure tracking and delivery of encrypted files. This approach combines security with convenience, enabling users to share sensitive data without compromising their privacy. By leveraging Twilio's authentication services, SendSafely provides an additional layer of protection against unauthorized access to user data.