The $800k exit
Kalo Yankulov has done this before. From October 2018 to February 2025, he co-founded and marketed Encharge, a marketing automation platform for SaaS companies. He scaled it to $2 million in generated revenue using SEO as the only growth channel — no paid ads, no outbound, just search. In February 2025, Encharge was acquired. The price: $800,000.
After the exit, Kalo did what experienced founders do: he wrote down what he learned. His post — 'I sold my SaaS for $800k: 17 lessons I learned' — became a reference for the bootstrapped community. Then he started building again. In February 2026, he launched Sensorhub, a social-selling platform that monitors LinkedIn, Reddit, and X for relevant conversations, helping users find high-intent buyers and engage with leads instantly. It hit $300 MRR in two weeks.
His Indie Hackers profile states the mission plainly: 'Growing Sensorhub.ai from $0 to $10k MRR.' It's public, it's specific, and it's the kind of accountability that only works if you actually intend to get there. Kalo also runs kalo.me, where he mentors early-stage SaaS founders and shares his build-in-public journey at blog.kalo.me. The audience he built selling the last company is the distribution channel for the next one.
Social selling, automated
Sensorhub attacks a specific, well-understood pain: social selling is manual and exhausting. Sales teams know buying signals hide in Reddit threads, LinkedIn comments, and X conversations — but finding them means hours of scrolling. Sensorhub automates the monitoring: it analyzes conversations across platforms, identifies high-intent buyers using deep go-to-market intelligence, and drafts personalized replies in the user's brand voice.
The product differentiation is deliberate and aggressive. Where competitors give users 30–100 conversations at signup, Sensorhub delivers hundreds — sometimes over a thousand relevant signals from day one, analyzing 10,000+ conversations per project immediately. There are no monthly signal limits, ever. The platform does hyper-deep analysis of ideal customer profiles, competitors, unique value propositions, and subreddits to make sure it understands the business before surfacing leads.
It's a classic second-time-founder product: the wedge is obvious because the founder has lived the pain. Kalo spent years doing SaaS marketing; he knows exactly what 'find me people already talking about this problem' is worth. The feature list reads like a response to every complaint about existing social-listening tools — more coverage, more signals, deeper analysis, replies that actually sound like you.
The product also ships with forward-looking features that signal where Kalo thinks the market is going: an AI agent called Genie that lets users query their signals data conversationally, MCP integration to plug Sensorhub data directly into AI workflows, and downloadable reports for teams that live in spreadsheets. Each one is a bet that social-selling data becomes infrastructure, not just a dashboard.
The audience is the moat
What makes Kalo's current run interesting isn't just the product — it's the operating system around it. He scaled Encharge on SEO alone, which means he understands compounding distribution better than almost anyone in the indie SaaS world. Now he's applying the same patience to Sensorhub, but with an additional weapon: a public audience.
The build-in-public strategy is doing real work. Every milestone — 'Launched a new SaaS: $300 MRR in 2 weeks,' 'Launching Sensorhub and first customers!' — is posted to Indie Hackers, where thousands of founders watch. That audience becomes a feedback loop (feature requests from people who've been there), a distribution channel (founders telling founders), and eventually an acquisition pipeline (the same community that watched Encharge grow watched it sell).
He's also productized the expertise itself. Through SaaSrank, he does SEO audits for B2B SaaS teams — turning the skill that built Encharge into a service business. Through kalo.me mentorship, he advises early-stage founders. Each of these is a small revenue stream, but more importantly, each keeps him inside the conversations where his next customers live. The founder is the distribution.
Why it works
Sensorhub at $300 MRR is barely a business — and that's exactly why the story matters. Kalo isn't starting from zero; he's starting from $800k of lessons, a $2M-revenue playbook, and an audience of thousands who watched him do it before. The two-week sprint to $300 MRR is what happens when experience compounds.
The bet is that social selling — finding buyers where they're already talking — becomes a standard part of the GTM stack, and that Sensorhub's 'more signals, no limits, deeper analysis' positioning wins against incumbents that throttle usage. The LLM-citation angle (getting cited by AI answers) is a smart forward bet on where discovery is heading.
For founders watching, the lesson isn't 'be Kalo.' It's structural: every business you build should make the next one easier. The audience compounds. The playbook compounds. The lessons compound. Kalo's 17 lessons from selling Encharge are now Sensorhub's unfair advantage — and in a few years, Sensorhub's lessons will be the next company's. That's the real flywheel. The only question is how fast it spins this time.
The playbook
- Master one channel completely — Kalo scaled Encharge to $2M using SEO as the only growth channel. Deep expertise in one channel beats shallow knowledge of ten.
- Build in public from day one — Every Sensorhub milestone is public on Indie Hackers. Transparency builds an audience that becomes customers, affiliates, and acquirers.
- Out-spec the incumbents on day one — Sensorhub's wedge: more signals from day one, no monthly signal limits, deeper ICP analysis than incumbents. Win on the dimension buyers feel immediately.
- Treat every exit as tuition — Seventeen lessons from selling Encharge became the operating manual for Sensorhub. Exits are education.
- Set the goal in public — Kalo's stated goal is $0 to $10k MRR, publicly tracked. Public goals create accountability that private ones don't.