JustBlogs
Case studyHow Speak Drives Double-Digit Relative Lesson Completions with JustAI
How a language-learning app made daily reminders more personal, with relative lifts in lesson-completion rate of 15.5% in Japan and 12.3% in Korea.
NewsJustAI launch: Founders’ note
The story behind what we’re building, and what comes next.
BlogBuilding Across Borders : Every Market Reads AI Differently
Reflections from the World Leaders Forum on how local policies and expectations shape AI products, and what that means for marketing across borders.
Case studyBetter Mortgage Turned an Old Email Flow into 30% More Loan Applications Started with JustAI
Emails matched to each homebuyer's timeline and intent run end to end by JustAI
BlogTuning Bandits at Fleet Scale
The multi-armed bandits behind JustAI's decisioning agent, and how we tune thousands of them to get the most out of every campaign's data.
BlogWhat's Been Cooking Since the Raise
Four things that have happened since our $17.5M Series A
BlogLifecycle Messaging Field Guide : Can an Email win by being opened Less?
793 live experiments across 30+ brands reveal what lifecycle messaging actually works, broken down by sector, scored on revenue actions, not opens.
News🎉 JustAI's $17M Series A
Founder's note
BlogHow we made general purpose AI useful for marketing
General-purpose AI can write emails. It can't learn what converts for your audience. Here's how reinforcement learning in marketing closes that gap.
BlogBeyond the Click Factory: The 2026 Guide to Agentic Lifecycle Marketing Automation
Move beyond basic triggers. Discover how autonomous AI agents for lifecycle marketing automation drive 1-1 personalization and complex customer orchestration.
BlogBeyond Rule-Based Automation: The Enterprise Guide to AI Decisioning and Real-Time Orchestration
Learn how to move beyond rule-based automation. Discover how AI decisioning and real-time orchestration drive algorithmic personalization and better CX.
Case studyHow Outschool scaled personalization with multi-agent AI decisioning
Personalization is easy to talk about. Making it work across a real lifecycle is harder.
Case studyHow ClickUp personalized lifecycle across 300+ segments with JustAI
ClickUp’s early activation focused on prompting new users to take key initial actions that predict long-term retention. Since new users lack behavioral history, the effort relied on workspace-level context to guide those actions early.
Case studyInsurance at AI speed: Lemonade’s growth with AI decisioning
If you think insurance can’t move at AI speed, meet Lemonade. The future of insurance marketing is AI first personalization, not louder discounts. This is how Lemonade used AI-decisioning to learn fast, cut regret from underperforming variants, and prove that friendly + speed beats “cheap + easy” for conversion.
NewsMeet JustAI
Ten years ago, marketers moved from spreadsheets to CDPs. Then came marketing automation platforms. Today, it’s time for the next leap — AI-first marketing workflows.
Case studyJustAI’s evolution with Thumbtack
We saw early engagement wins (up to +80% CTR and +35% OR). And then came the right question: “Does this translate to requests and revenue?” That reframed the work, and the product. Thumbtack pushed us to move beyond vanity metrics; they wanted to see if this engagement lift can translate into real revenue. Beyond metrics, the team wanted learnings: which segments actually matter, where personalization pays off, and whether AI can beat human creative.
Case studyCoursera scales personalization with JustAI decisioning
Coursera and JustAI share a bold vision: build AI-native systems that make personalization effortless, scalable, and ROI-positive. Coursera has long led the charge in applying AI across learning, using it to create courses, coach learners, and assess progress. JustAI brings that same intelligence to lifecycle marketing, making it easy for teams to run hundreds of tests, personalize at scale, and surface insights automatically, without relying on engineers or analysts.
Feature releaseHow JustAI uses reinforcement learning to power AI marketing
At JustAI, we’ve built an AI-first decisioning platform that continuously learns and adapts, in real time, using reinforcement learning (RL) and large language model (LLM) optimization. This means better personalization, faster learning cycles, and measurable lift without additional manual testing overhead.
Case studyTumblr boosts conversions by +4.7% with JustAI's messaging engine.
Discover how Tumblr achieved a +4.7% lift in push notification performance using JustAI's AI-powered message intelligence platform. See real-world results across 5 high-impact campaigns with dynamic content optimization.
Case studyNotion uses JustAI to test 100+ content variations
Notion uses JustAI as an autonomous marketer that runs 100+ content variations. One monetization campaign drove a 96% lift in CTRs, translating to $1.34M in annual revenue
BlogJustAI turns 1 today!
It feels surreal to say this, but we’re turning one 🎂 in just four days! A milestone like this calls for a moment of reflection, so let’s take you on a journey through our incredible first year.
BlogThe DNA of a founding team: Grit, chaos, and the right first hires
8 years ago, I made an impulsive decision overnight. quit my cushy job at Goldman to join Sensorflow, a 2-month-old company then, as their founding engineer. It meant a 50% pay cut, long hours, and endless chaos. Looking back, I know it was the best decision I made and JustAI wouldnt be the same without that founding experience.
BlogAI marketing for BiggerPocket shows 44% gains in premium conversions
Words matter, especially when it comes to email marketing. BiggerPockets, the leading real estate investing community, understood this principle and partnered with us to transform their email engagement strategy. By leveraging tailored messaging, automation, and machine learning, we helped BiggerPockets achieve an impressive 32% gain in email engagement. Here’s how we did it
Case study📈 JustAI compounded Grammarly's growth by 16%
Sneak Peek: How JustAI helped Grammarly boost engagement when it comes to digital communication, words are more than just a medium—they’re a powerful tool for engagement. Grammarly, a leader in the writing enhancement space, leveraged this idea to drive incredible results. Here's how we did it:
NewsJustAI raised $1.7M from Peak XV and Y-Combinator
Here's a shout out to our early believers - people who have been pivotal in our journey at JustAI. They gave us the extra nudge when the chips were down.
NewsWho is going to win the AI race in Growth & Marketing?
Last month, Jeff Hara and I stepped back to zoom out. What's our end game? Where is the world going to be in 5 years? Getting featured on the Times Square billboard was a good nudge and reminder to think bigger
NewsHot AI takes at our very first Growth X AI dinner series
We had an insightful evening at our first Growth X AI dinner in San Francisco, surrounded by top Growth leaders sharing the hottest takes in AI!
BlogHow these 3 slack channels helped build a strong team culture at JustAI
As we grow our team, we have started thinking about how to continously build a culture of respect, learning and more. These 3 slack channels organically helped us get there.
BlogWelcoming Jeff to the founding team!
Jeff Hara and I had started co-founder dating but I wanted to take it slow before making a decision. I woke up in a funk one of these days (those sales and investor calls had gotten to me)
BlogWords, words, words
The history and evolution of messaging optimizations at Twitter. One of our early hypotheses was that while we were trying hard to find the best Tweets for our users, we were not necessarily presenting them the right way. We framed the problem as “Imagine a restaurant that has the best dishes one could taste. If the dishes are not plated well, not a lot of people would go in”.
Blog{Title} goes here
Notice something off? Remind you of email spam? Time to rethink it. We spent the last couple of weeks (technically the last 5ish years) exploring short-form copy. This time, we zoomed out, drawing parallels across the industry on how it’s crafted and delivered to users.What if we create a world where every single user sees unique content that is tailored to them?
BlogAI Decisioning: How top enterprises are evolving marketing
In the last few months, we talked to 100+ CRM and lifecycle leaders to understand what's chaotic in the marketing workflows, and the world they envision.
Latest on JustAI
The new lifecycle marketer:
How Notion used JustAI for Hyper-personalization
JustAI identified as a must have in your AI Growth stack
How AI driven experiements are changing Growth marketing
JustAI reconginized as a ground breaking platform for content personalization
Pioneering Marketing X Reinforcement Learning (RL) sector
How Growth strateges in large companies are evolving
JustAI partners with Iterable!
JustAI featured as one of the top 3 tools in AI Growth tech stack for communication personalization at Reforge.
Founded by seasoned tech veterans Neha Mittal and Jeff Hara, JustAI announced the closing of a $1.7 million seed round
Neha Mittal, former growth head at Twitter, shares how she turned an insight into a revolutionary AI-powered platform
JustAI recognized at the Gen AI collective among the top 10 startups in AI and Growth
JustAI featured on TimeSquare
Techcrunch features JustAI at the YC demo day 2024
Neha Mittal unveils growth secrets to boost user growth
JustAI (YC W24) optimizes product copy for user growth
JustAI in the news
- The Hindu Business Linehttps://www.thehindubusinessline.com/info-tech/just-words-an-ai-startup-raises-17m-in-seed-funding-from-peak-xv-and-y-combinator/article68572216.ece
- YourStoryhttps://yourstory.com/2024/08/startup-news-updates-daily-roundup-august-27-2024
- Entrepreneurhttps://www.entrepreneur.com/en-in/news-and-trends/just-words-plutos-one-insurancepadosi-and-build3-raise/479012
- Dev Discoursehttps://www.devdiscourse.com/article/business/3065357-fabrication-bazar-secures-3-million-in-funding-expands-to-global-markets
- VCCirclehttps://www.vccircle.com/convinfinarkein-five-others-raise-early-stage-funds
- BW Disrupthttps://bwdisrupt.com/article/peak-xv-and-y-combinator-invest-in-ai-startup-just-words-530910
- CNBC TV18https://www.cnbctv18.com/business/startup-digest-bigbasket-joins-q-commerce-party-byjus-investors-move-sc-virendra-sehwag-invests-in-t9l-qube-apple-taps-insider-kevan-parekh-as-cfo-and-more-19466511.htm
- Web Newswirehttps://www.webnewswire.com/2024/08/27/ai-startup-just-words-secures-1-7m-in-seed-funding-from-peak-xv-and-y-combinator/
- Startup Newshttps://startupnews.fyi/2024/08/27/just-words-gets-funding-from-peak-xv-partners-y-combinator/
- Rediffhttps://money.rediff.com/news/market/fabrication-bazar-raises-usd-3-million-for-expansion/14841020240827
- Marca Moneyhttps://www.marcamoney.com/just-words-raises-1-7-million-in-seed-funding-from-peak-xv-and-y-combinator/
- Equity Bullshttps://www.equitybulls.com/category.php?id=350536
- For Press Releasehttps://www.forpressrelease.com/forpressrelease/638844/4/ai-startup-just-words-secures-17m-in-seed-funding-from-peak-xv-and-y-combinator#google_vignette
- Social Media Dissecthttps://www.socialmediadissect.com/ai-startup-just-words-secures-1-7-million-in-seed-funding-to-transform-marketing-messaging/
- Startup Success Storieshttps://startupsuccessstories.in/ai-startup-just-words-secures-1-7m-seed-funding-from-peak-xv-and-y-combinator/
- Inc42https://x.com/Inc42/status/1828468259768729976