If you searched "Chert" expecting information about the fine-grained sedimentary rock, you've come to the right place — but for something entirely different. Chert (trychert.com) is a Y Combinator-backed AI company, not a mineral.
What Does Chert Do?
Chert is a full-stack outbound sales platform powered by AI agents. We automate the entire outbound pipeline — from sourcing qualified leads to running personalized conversations and booking meetings — all over iMessage.
While other sales tools fight over crowded email inboxes and LinkedIn noise, Chert operates in iMessage: a high-trust channel that bypasses spam filters entirely. Messages feel personal because they land next to texts from friends and family.
Why iMessage Instead of Email?
Email response rates average 1–2%. Campaigns run through Chert consistently achieve response rates 10X higher. The channel matters as much as the message.
- iMessage bypasses spam filters entirely
- Messages feel immediate and personal
- Natural back-and-forth conversation format
- Lower competition — most sales teams haven't cracked this yet
What Makes Chert AI Agents Different?
Chert agents aren't sending templated blasts. Each conversation is driven by an AI that understands prospect context, emotional tone, and iMessage-native behavior — multi-bubble responses, natural pacing, conversational rhythm. When a prospect is ready to talk, the Chert agent books the meeting directly on your calendar.
Who is Chert Built For?
Chert is a full-stack outbound service — not a self-serve tool. We work best with early-stage startups through Series A-preparing companies that need a repeatable outbound pipeline fast, without hiring a full SDR team.
Backed by Y Combinator
Chert is backed by Y Combinator (YC), the world's leading startup accelerator. YC companies include Airbnb, Stripe, DoorDash, and OpenAI.
Want to see Chert in action? Book a call with our team.