Customer.io

Data-driven customer messaging platform for email, push, SMS, and in-app. Usage-based pricing anchored on profile volume and email sends. No free tier — starts at $100/mo. AI Agent with execution skills bundled into all plans with escalating limits.

Plans

Essentials ($100/mo billed monthly) — 5,000 profiles, 1M monthly email sends, AI Agent with core execution skills (3 custom skills, 1 routine task weekly), visual workflow builder, LLM actions with 100K credit sample, basic data integrations, 2 workspaces, unlimited seats, email + community support.

Premium ($1,000/mo billed yearly) — Custom profile volume and pricing, elevated AI Agent limits (10 custom skills, 5 routine tasks daily), daily routines, premium chat + email support, 90-day onboarding, HIPAA compliance, unlimited workspaces, anonymous messaging, premium integrations, custom role-based permissions.

Enterprise (Contact Sales) — Best pricing on profile and email volume, custom AI Agent limits and execution skills, priority technical support, migration support, dedicated CSM, dedicated hardware, audit logging, data governance, shared Slack channel, dedicated technical implementation specialist.

Notes

No free tier — $100/mo minimum creates a high entry barrier relative to competitors. 10x price jump from Essentials to Premium ($100 to $1,000). Profile-based pricing with email sends as secondary metric ($0.12/1K additional emails across all plans). AI Agent (beta) bundled into every plan with escalating skill and routine limits. Unlimited user seats on all plans — pricing is purely usage-based, not per-seat. Startup program offers 12 months free for companies that raised under $10M. Essentials billed monthly, Premium and Enterprise billed annually.