From lawn sprinklers to $375K in SaaS revenue: How LeadEngage turned one API integration into a 300-customer business

Wade Lester spent 17 years installing lawn sprinkler systems in the Georgia heat. Twenty-plus employees. Residential and commercial. Shovels, then equipment, then crews he managed from his truck.

He sold that business, became a top-producing real estate agent and kept searching for the thing his irrigation company never had. Predictable revenue.

"Every Monday started at zero," Wade says about the commission-based cycle. "In real estate, you're gonna win some and you're gonna lose some. There really wasn't a path of predictability."

His dad understood that problem. The two of them had started building Mortgenius, a mortgage software tool designed to help buyers shop by budget instead of price. His father was the engineer. Wade was the business mind. They were printing install discs and preparing for their first event when the internet shifted everything to web-based delivery.

Before they could pivot, Wade's father was diagnosed with cancer. He passed away in 2013. The product never made it to market.

"That has really inspired me to start a software company," Wade says. "I'm not a software guy, and HighLevel has really made that possible for me."

Three years later, LeadEngage generates $375,372 in annual gross revenue, serves nearly 300 paying customers and has never spent a dollar on advertising.

This is how Wade built it.

The challenge: A CRM gap that thousands of agents complained about

Wade used Follow Up Boss as his primary CRM for real estate. He liked the platform. His team liked the platform. One limitation kept nagging him.

Follow Up Boss had no automated outbound texting.

For a real estate agent trying to nurture leads at scale, that was a dealbreaker. But switching CRMs meant losing years of contacts, workflows and muscle memory. So Wade stayed and worked around it manually.

Then his nephew, Quentin Newman at Capri AI, introduced him to HighLevel. This was before SaaS Mode existed. Wade started using the platform for his own real estate marketing. The power dialer. Missed call text back. Automations.

The more he explored, the more one feature kept pulling him in. The open API.

"I was like, I wonder if I can empower Follow Up Boss with HighLevel's features, starting with the texting," Wade says. "And that's what we did."

Follow Up Boss also had an open API. Two open APIs meant two systems could talk to each other. Wade didn't need to convince agents to abandon their CRM. He could plug HighLevel's capabilities directly into the tool they already used.

That was the business.

The solution: Middleware that gives agents HighLevel power without leaving Follow Up Boss

Wade built the first version of LeadEngage using no-code tools. Make.com handled the logic. HighLevel handled the features. Follow Up Boss stayed the home base.

The product launched to a small beta group. Friends. Community members. People who would try it free and tell him what broke.

"Before I charged people, I wanted to validate that it worked," Wade says.

It worked. And it solved a problem thousands of Follow Up Boss users shared.

LeadEngage now offers three tiers:

• The $149 per month plan gives agents automated drip texting plus two-way messaging across SMS, WhatsApp, Facebook and Instagram, all inside Follow Up Boss.

• The $197 plan adds HighLevel's workflow automations, forms and funnels.

• The $297 plan opens the full white-labeled HighLevel platform with every feature integrated back into Follow Up Boss.

Wade also built HL Apps, a standalone product for agents who already have their own HighLevel account and just want the integration layer. That product lets HighLevel handle platform support while Wade's team handles only the connection between the two systems.

The positioning was specific. Solve one pain point. Let the customer see results. Then expand.

"Find the pain of the business, give them the solution, and then you can upsell the other features once they get comfortable with the one feature," Wade says.

The result: $375K in year three with zero ad spend

Year one was about survival. Wade set one goal: cover overhead and his assistant Angela's salary. The business cleared $62,108 in gross revenue. Every customer came from the Follow Up Boss community. Every sale was organic.

Year two more than doubled it. $172,281. The customer base grew through word of mouth and Wade's active presence in the Follow Up Boss and HighLevel Facebook groups. He never ran a paid ad. He never launched a YouTube channel. He showed up in the community, helped people and let the product speak.

Year three hit $375,372. Nearly 300 active paying customers across the three subscription tiers.

But year two also delivered the scariest moment in the business.

Wade had transitioned from no-code to real code, hiring a developer to rebuild the infrastructure on Google Cloud. During the migration, a bad actor exploited a security misconfiguration and a crypto miner hijacked the account.

Google shut everything down. Lights out. Every customer affected.

"We probably had 150 customers that were relying on the platform," Wade says. "And it was lights out. Apps off. Contact support."

Google's enterprise support cost $5,000 just to get someone on the phone. Wade's team started rebuilding the entire app from scratch because they had no timeline for restoration. They were a day and a half into the rebuild when Google brought the account back online.

Wade sent an apologetic email to every customer. The responses surprised him.

"Nobody was upset. They actually were understanding and knew me and knew what I was doing. That was probably a moment for me that was like, okay, probably need to back up and structure this a little bit more."

The trust he had built through community presence saved the business. That lesson changed how he operated from that point forward.

What happens when you stop building from scratch and start building the bridge?

Wade Lester spent 17 years digging trenches and running irrigation crews in the Georgia heat. Sold the company. Became a top-producing real estate agent. Still couldn't find the one thing every business he touched was missing. Predictable revenue.

HighLevel changed the math.

One API. One integration. One community that already trusted him. A middleware product that gave 300 real estate agents access to HighLevel's features without leaving their existing CRM.

Three years in, LeadEngage generates $375K in annual gross revenue with zero ad spend, a team of three and a founder who never wrote a line of code.

Read the full case study to see how Wade built it from a free beta to a Gold SaaSPRENEUR award. From a no-code MVP to a security breach that nearly killed the business to a customer base that forgave him because he'd spent years earning their trust first.

Disclaimer: The results shared in this case study reflect the experience of one HighLevel user and are not typical or representative of what other users may achieve. LeadEngage's growth and revenue outcomes are specific to their unique business model, market and execution. Revenue figures represent gross revenue during the stated period and do not reflect expenses or net profit. HighLevel makes no representations, warranties or guarantees regarding potential earnings, client growth or business success. This content is for illustrative and informational purposes only and does not constitute a business opportunity, franchise offering or earnings guarantee. Past performance does not predict future results and individual results will vary significantly.