# Neha Mittal

> Neha Mittal is the CEO and co-founder of JustAI (formerly Just Words), a Y Combinator W24 startup in San Francisco building an AI-first marketing engine that continuously writes, tests, and optimizes copy across email, push, SMS, and landing pages. Before founding the company in 2024, she led Retention and Growth product teams at Pinterest and Twitter, where a single notification tweak - changing "Elon tweeted" to "Elon just tweeted" - added roughly 800,000 users and planted the seed for her company. A computer engineer turned product leader, she earned a master's at UC Berkeley's School of Information and has raised about $2.2M in seed funding from Cloud Capital, Peak XV Partners, and Y Combinator.

- **Role:** CEO and Co-founder at JustAI (Just Words)
- **Organizations:** JustAI (Just Words), Pinterest, Twitter, CityStructure, SensorFlow, Goldman Sachs, Chan Zuckerberg Initiative
- **Nationality:** Indian
- **Education:** Master's in Information Management and Systems (MIMS), UC Berkeley School of Information, Bachelor's in Computer Engineering, National University of Singapore
- **Known for:** Built notification automation at Twitter that drove ~20% additional user growth, Famous copy experiment ('Elon tweeted' to 'Elon just tweeted') credited with ~800,000 new users, Founded and leads a Y Combinator W24 company

## Career timeline

- **Early career** — Engineer at Goldman Sachs working on large distributed systems
- **—** — Founding engineer at SensorFlow
- **—** — Co-founded CityStructure
- **2019** — Completed master's at UC Berkeley School of Information
- **—** — Led growth on the Notifications team and launched data products at Twitter
- **—** — Headed product for Retention and Growth at Pinterest
- **2024** — Founded Just Words, joined Y Combinator Winter 2024 batch
- **2024** — Raised ~$2.2M seed round led by Cloud Capital and Peak XV Partners
- **2025** — Rebranded Just Words into JustAI, an AI-first agentic marketing platform

## Achievements

- Built notification automation at Twitter that drove ~20% additional user growth
- Famous copy experiment ('Elon tweeted' to 'Elon just tweeted') credited with ~800,000 new users
- Founded and leads a Y Combinator W24 company
- Raised approximately $2.2M in seed funding
- Landed enterprise clients including Coursera, Thumbtack, and Tumblr

## Latest updates

- **2025** — Just Words rebranded to JustAI, expanding from copy testing into a full AI-first marketing engine
- **2024** — Closed ~$2.2M seed round and shipped product with enterprise clients like Coursera, Thumbtack, and Tumblr

## Links

- Website: https://getjust.ai
- LinkedIn: https://www.linkedin.com/in/neha01mittal/
- Twitter/X: https://x.com/neha01mittal

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Profile page: https://yespress.io/neha-mittal
Published by YesPress — https://yespress.io
Last updated: 2026-06-22