Latest / Solopreneur Sessions with Fexingo: One-Person Businesses, Freelancing, and Independent Work / How One Solopreneur Built a Business on a Single Newsletter
Transcript
- Lucas: So you've heard the advice a thousand times — build an email list. But what if that list is literally the entire business? No website, no social media presence, just a newsletter that funds everything else. Luna: That sounds almost too simple. But I know there are solopreneurs who've done exactly that. Who are we talking about today? Lucas: Sarah K Peck. She started a weekly newsletter called "Startup Parent" back in 2020. The concept was simple — she'd write about the intersection of entrepreneurship and parenthood. No guest posts, no lead magnets, no complicated funnel. Just one email every Wednesday. Luna: And that turned into a full-time business? Lucas: Yeah. By mid-2024, she was pulling in about $300,000 a year from that single newsletter. The revenue came from three things: a paid podcast sponsorship slot, a self-paced online course, and one-on-one coaching. All of it sourced from the same email list. Luna: So the newsletter was essentially the customer acquisition engine for everything else. Lucas: Exactly. And here's the part I found really interesting — she didn't start with a monetization plan. For the first six months, she just wrote. No ads, no products. She was testing whether she could consistently produce something people wanted to open. Luna: How big was the list when she finally started monetizing? Lucas: Around 2,000 subscribers. And her open rate was about 50 percent at that point — which is unheard of for a cold list. But she'd built it entirely through word of mouth and a few guest appearances on other newsletters. Luna: So the content was strong enough to spread organically. That's the hard part. Lucas: Right. She treated every issue like a mini-essay. Most were 1,500 words. She wasn't trying to be pithy or deliver quick tips — she was telling stories about her own experience running a business while raising a toddler. And people related to that. Luna: I can see how that builds trust way faster than a typical sales page. Lucas: That trust translated directly into sales. When she launched her first course — a four-week program on building a flexible business — she sent one email to the list. The course was $500. She got 40 signups in the first week. That's a 4 percent conversion rate from a single email. Luna: Four percent is huge. Most e-commerce sites would kill for a 2 percent conversion rate. Lucas: And she didn't use a landing page. The email itself was the sales page. It was a 2,000-word letter explaining why she built the course, what was inside, and who it was for. That was it. Luna: So the newsletter became her product launch platform. No ads, no affiliates, no retargeting. Lucas: Zero. And she kept the list relatively small. By the time she hit $300,000 in revenue, she had about 8,000 subscribers. That's $37.50 per subscriber per year. Compare that to someone with a 50,000-person list who's making maybe $20,000 a year from ads. Luna: So the key wasn't list size. It was the relationship. Lucas: Exactly. And she protected that relationship. She turned down sponsorship offers from companies she didn't use herself. She only promoted her own course and coaching. Every email felt like it came from one person, not a brand. Luna: That's a huge lesson for solopreneurs. It's tempting to grow the list as fast as possible, but if you lose the intimacy, you lose the conversion power. Lucas: She actually wrote about that in one of her issues. She compared her newsletter to a dinner party — you wouldn't invite a hundred strangers and then try to sell them Tupperware. You'd invite people you know and trust, and then offer something you genuinely believe in. Luna: That metaphor really sticks. And it's a good segue into something I wanted to mention — we've been doing this show for a while now, and we've never run a single ad. That's intentional. The conversations are better without a sponsor telling us what to say. Lucas: Totally. And if these episodes have helped you think differently about your own business, the best way to support that is simple — head over to buy me a coffee dot com slash fexingo. It's a one-time thing, no subscription, no commitment. Just a way to keep the show ad-free. Luna: Yeah. And it really does make a difference. So, back to Sarah — she eventually launched a podcast based on the newsletter. Same name, same audience. Lucas: And the podcast wasn't a separate venture. She interviewed people she'd already featured in the newsletter. The episodes were basically audio versions of the written interviews. She'd transcribe them and send them out as a newsletter issue the next day. Luna: So the content was repurposed across two channels, but the newsletter remained the primary hub. Lucas: Exactly. And that's a pattern I see with successful newsletter-first solopreneurs. The email list is the center. Everything else — podcast, YouTube, social media — points back to it. You own the list. You don't own the algorithm. Luna: What about the coaching side? How did she integrate that? Lucas: She offered coaching packages — six sessions for $1,500. She mentioned it in a postscript at the bottom of a newsletter. Not a big launch. She just said, 'I have three spots open for one-on-one work.' They filled within a day. Luna: From a single postscript. That's the power of a warm audience. Lucas: Yeah. And she capped it at three slots per quarter. That alone added about $18,000 a year. But she didn't want coaching to become the main focus. The newsletter was always the core product. Luna: I think a lot of solopreneurs make the mistake of chasing the highest-revenue activity and end up neglecting the thing that built the audience in the first place. Lucas: Right. Sarah was disciplined about that. She kept the newsletter free and consistent. Even after she had paying customers, she never put content behind a paywall. The list stayed open. The value stayed upfront. Luna: So the revenue came from products, not from the newsletter itself. That's a different model than, say, Substack where writers charge a subscription. Lucas: Completely different. She could have put the newsletter behind a $10 monthly paywall and probably made decent money. But she believed that keeping it free was what made the list grow. And the data backs that up — her list grew from 2,000 to 8,000 over three years, entirely organically. Luna: Let's talk about the growth mechanics. How did people actually find her newsletter? Lucas: Three main channels. First, she was a guest on other newsletters that covered parenting and entrepreneurship. She'd write a short piece for them, and at the end, she'd invite readers to subscribe to Startup Parent. That accounted for about 40 percent of new subscribers. Luna: That's interesting — guesting on other newsletters rather than podcasts or blogs. Lucas: Because the audience was already primed to read long-form email. Second, she leveraged her own network. She'd email friends and former colleagues with a personal note and ask them to subscribe and forward it. That was small but high-quality — those referrals had a 60 percent open rate. Luna: And the third channel? Lucas: Cross-promotion with other newsletter writers. She participated in swaps — she'd recommend another newsletter in her issue, and they'd do the same. That was about 30 percent of growth. But she was selective. She only swapped with newsletters that had similar values and audience size. Luna: So she was treating the newsletter like a media property, but with a very tight focus. Lucas: Exactly. And the whole operation was lean. She used a simple email platform — not Mailchimp, not ConvertKit, just a basic tool called Buttondown. Cost her $9 a month. No website builder, no CRM, no analytics suite. She tracked open rates manually. Luna: That's the ultimate low-overhead business. Her only real cost was her time. Lucas: Time and the cost of a domain name. She spent maybe 10 hours a week on the newsletter — writing, scheduling, replying to replies. And another 5 hours on course updates and coaching prep. So 15 hours a week total for a $300,000 business. Luna: That's $400 an hour. Which is a great reminder that you don't need a team or a flashy tech stack to build a real business. Lucas: And she's not an outlier. There are dozens of solopreneurs doing this across niches — from finance to fitness to knitting. The common thread is that they treat the newsletter as a relationship, not a broadcast. Luna: So if someone listening wants to start a newsletter business tomorrow, what's the single most important takeaway from Sarah's story? Lucas: I'd say this: don't worry about the monetization plan for the first six months. Focus on whether you can write something that people actually want to open. If you can get a 40 percent open rate consistently, you can sell almost anything to that list. Luna: And keep the list small enough that you can reply to every email personally. Lucas: Sarah did that. For the first year, she replied to every single reply. That built incredible loyalty. People felt like they were in conversation with her, not just receiving a broadcast. Luna: That's the kind of business that feels sustainable. No burnout, no algorithm stress, just a direct line to the people who care. Lucas: Exactly. And that's the solopreneur dream, isn't it? Not a billion-dollar exit. Just a business that works on your terms.