JustAI

Active

Agentic Marketing Platform

Winter 2024Founded 20244 peopleSan Francisco, CA, USA

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About

Always-on AI agents for 1-1 personalization at scale

From their website

as of Jun 7, 2026getjust.ai ↗

SaaSSubscription

JustAI offers an AI-driven marketing platform that enables always-on, 1-1 personalized messaging at scale. It positions itself as an end-to-end, AI-powered marketing stack designed to automate experimentation and reduce manual campaign management.

The product provides a suite of AI agents (Strategy, Data, Creative, Decisioning, and Optimization) that collectively manage campaigns end-to-end. Data Agent ranks messages across users and creates personalized content libraries; Creative Agent generates content and insights; Strategy Agent identifies hyper-segments and creates personalized content; Decisioning Agent makes determinations to optimize campaigns; and Optimization Agent fine-tunes variants. The platform enables end-to-end workflow automation from testing to execution, with always-on AI agents that continuously test, learn, and optimize campaigns in real time, with a centralized system intended to replace disparate tools and manual A/B testing.

Who it’s for: Enterprise marketing teams seeking hyper-personalized, AI-powered lifecycle marketing and automated, scalable experimentation.

Features

AI agents for lifecycle marketing
End-to-end campaign automation
Hyper-personalization at scale
Real-time testing and optimization
Centralized content library generation
Hyper-segmentation and insights
Notion-connected customer support hub

The text references enterprise adoption and customer testimonials, implying traction, and emphasizes automation and AI-native workflows, suggesting ongoing growth and product maturity.

Founders · 1

Neha MittalFounder

Twitter

Goldman Sachs

Neha Mittal is the CEO & Co-founder of just words. She was the head of product for Retention & Growth at Pinterest and at Twitter. She also co-founded CityStructure and was the founding engineer at Sensorflow. She has also held product & engineering roles at the Chan Zuckerberg Initiative and Goldman Sachs.

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Launch

Launched on Y Combinator · Jan 2024

View launch post ↗

Maximize growth velocity with automated message refresh on emails and push.

JustWords.ai builds an AI-first marketing tech stack for enterprises to auto-refresh and customize content across emails, SMS, push notifications, and landing page titles in real time. The core product uses reinforcement learning and AI to continuously optimize content, enabling faster experiments and improved engagement.

From the original launch (Jan 2024) — may be outdated.