JustAI

JustAI is an agentic marketing platform that deploys always-on AI agents to automate personalization, experimentation, and decisioning at scale for enterprise marketing and growth teams. Founded in 2024 by Neha Mittal (former Pinterest and Twitter growth lead) and Jeff Hara, and backed by Y Combinator (Winter 2024), Base10 Partners, and Peak XV Partners, JustAI helps companies move beyond manual campaign workflows and rigid A/B testing cycles by using reinforcement learning and causal inference to auto-refresh content in real time across email, SMS, push, and other lifecycle channels. The platform enables campaigns to self-evolve — AI agents detect opportunities, generate and test messages, measure outcomes, and continuously improve — allowing brands to operate always-on, hyper-personalized cross-channel journeys. JustAI raised a $17M Series A in June 2026.