Zaymo is a YC W24-backed B2B SaaS company based in Lehi, Utah that turns static marketing emails into interactive mini-apps. Built on AMP for Email technology and deeply integrated with Klaviyo and Shopify, Zaymo lets ecommerce brands embed one-click purchasing, subscription management, review collection, and gamified elements directly inside the inbox — no redirect required. Customers report 12–15X ROI, 24–52% reductions in subscription churn, and conversion lifts that static email simply cannot match.
Zep AI builds the context engineering infrastructure that makes AI agents actually useful. Their platform - powered by a temporal knowledge graph called Graphiti - gives agents persistent memory across sessions, letting them track what users said, what changed, and when. Founded in 2023 and backed by Y Combinator (W24), the San Francisco team hit $1M ARR within months of launch and now serves 240+ customers including Fortune 500 companies. With 25,000+ GitHub stars on Graphiti and a published arXiv paper, Zep is quietly becoming foundational infrastructure for the AI agent era.