How Henry AI hit $1M ARR in 8 months — with zero marketing spend

When Sammy Greenwall first started pitching Henry AI, he didn’t have a product. Just some mockups and a belief that AI could automate one of the most time-consuming parts of a commercial real estate transaction: the pitch deck.

Traditionally, assembling these documents takes dozens of hours and weeks of back-and-forth. With Henry, users can build them “with the snap of a finger.” 

And the product is catching on fast. Just eight months after launch, Henry AI has surpassed $1 million in ARR, without spending a dollar on marketing or hiring a sales team. 

Coming out of Y Combinator’s W24 batch, we caught up with Sammy to hear how the first year of building has been like post demo-day, and the biggest lessons he’s learned that other founders can benefit from. 

From first jobs to first principles

Sammy and his cofounder Adam Pratt are longtime friends and veterans in the startup world. Adam sold a company for seven figures while still in college, and Sammy had helped lead a proptech business through Series B.

The idea for Henry AI came from Sammy’s first job out of college. “I actually started my career as a commercial real estate analyst, and I had to build dozens and dozens of these pitch decks,” he says.

The process was time-intensive and universal. “Any transaction in commercial real estate that ever happens in all of the United States requires one of these pitch decks,” Sammy says. “They're the bane of everyone's existence.”

When large language models (LLMs) matured, Sammy saw an opportunity to automate this part of the real estate deal and was able to sell his vision without a sales team or big marketing budget. 

“It goes back to this first principles idea. Is this a product that works? Do people love it? Are they willing to pay?” Sammy says. ”If you think about that every single day, you're going to build something fantastic. You're not going to need a crazy sales force to prove the value. People are going to be begging you to try the product.”

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Startup tactics: Founder-led sales at scale

So how did Sammy bootstrap Henry AI’s early success without a traditional go-to-market strategy? Here are his tips for founders:

Tip 1: Sell before you build

“People just rejected the idea. They said it was too crazy,” Sammy says. “They said it made no sense. They said they wouldn't pay for it. They said it wasn't possible to build. But we got a few super early adopters who were like, ‘Yeah, go for it.’”

That early validation gave the team confidence to move forward and build an MVP. One of the first users called Sammy during their seed raise to say: “I didn't really believe in your product at all, but I tried it out because I believed in you guys, and I just won a listing against 11 other brokers. They said it was because I built the best pitch deck.”

Tip 2: Let your product (and customers) drive growth

“We have over 62 brokerages across the country, both small, medium, and enterprise size. We just under $1 million in ARR at the end of July. We've never spent a dollar on marketing, and we don't have a sales team. It’s been all product-led growth and me posting on LinkedIn. That’s been it.”

Tip 3: Use AI and automation to ship faster and stay lean

“We wouldn't be able to build a product, demand this price from these customers, or ship this quickly without LLMs,” says Sammy. “It would be completely impossible.” 

Henry AI also uses Rippling to automate their busy work so they can focus on building their business. “Rippling helps us with a bunch of operational issues,” Sammy says. “Everything from onboarding and hiring and expense management and credit cards, to ensuring that we're compliant with our contractors and our employees and people are getting paid on time.”