Claw Messenger provides AI agents a dedicated US phone number for iMessage, RCS, SMS—no Mac needed. For developers on Linux/VPS/Docker, it offers native features: tapbacks, read receipts, group chats, iMessage-to-SMS fallback, and WebSocket-first integration. Connect via OpenClaw plugin or REST/WebSocket API (LangChain, CrewAI). Register, instruct, message. Plans from $5/mo for 1,000 messages, with a 7-day free trial. Custom options exist.