For lifecycle and CRM marketers running multichannel campaigns, Customer.io is a customer engagement platform that triggers email, SMS, push, and chat messages off real-time behavioral data, with a conversational AI Agent that builds full campaigns from a single prompt.
▲ 28 60-day move
Measures earned, engagement-weighted share of voice across the GTM voices panel. Methodology →
Ranked #23 of 126 in Traditional SaaS Going Headless, up 28 this cycle.
Measures how easily your agents can build on it — API, MCP, CLI, SDK, docs depth. Methodology →
Grade A — ships API, MCP, SDK, no public CLI on file; agents can build on it today.
Startup-stage on our scale — 35 employees on record.
Founded 2012Funding $8.3MARR $100M ARR (2025)Valuation $690M (2022)Status Independent
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