Dial - Phone Numbers for AI Agents vs. Sinch Engage

Dial gives AI agents their own communication identity. Through a single REST API or MCP tool, agents can provision real US, Canadian, and international phone numbers and immediately send and receive SMS, WhatsApp messages, and voice calls - no carrier setup, no separate integrations for each channel. Dial is built for the agentic era, where AI agents increasingly need to act on behalf of users: signing up for services, completing 2FA/OTP verification, placing outbound calls with a local caller ID, and handling inbound communication across every channel.

Sinch Engage (formerly MessageMedia) is a powerful all-in-one messaging platform that helps businesses connect with their customers faster, more personally, and at scale. Backed by Sinch’s 20+ years of experience in business messaging and trusted by over 40,000 businesses worldwide, the platform combines enterprise-grade reliability with user-friendly design so teams of any size can deliver conversations that build trust and drive results. With Sinch Engage, businesses can manage all of their messaging channels in one centralized workspace—including SMS, MMS, WhatsApp, RCS, and more.