Latest / The Newsletter Podcast with Fexingo: Substack, Beehiiv, and Email Newsletter Business / How Newsletters Are Using Podcasts to Grow Subscribers
Transcript
- Lucas: Luna, I have been noticing something interesting in my feed lately. A bunch of newsletter writers I follow — people who built their whole business on email — are suddenly launching podcasts. Not as a side project, but as a deliberate subscriber growth channel. Luna: Yeah, I've seen it too. There's this sense that audio is becoming the new front door for newsletters. But I wondered if it actually works or if it's just creator FOMO. Lucas: That's exactly the question I wanted to dig into. So I looked at a specific case: 'Marketing Examined'. It's a B2B marketing newsletter, roughly 80,000 subscribers, mostly free with a paid tier at about $15 a month. Last October they launched a daily 5-minute podcast — just repurposing the newsletter content, read by the writer, no fancy production. Luna: Right, because the barrier to entry for a newsletter podcast is pretty low. You don't need a studio. You just need a decent mic and 10 minutes of recording time. Lucas: Exactly. And the results were surprising. Within one quarter, their free-to-paid conversion rate jumped from around 3 percent to about 4.2 percent. That's a 40 percent increase. And they attributed most of that to the podcast. The key metric they tracked was that people who listened to at least three episodes were roughly twice as likely to upgrade compared to email-only subscribers. Luna: That's a big lift. But I wonder — is the podcast actually driving the conversion, or is it just that people who listen are more engaged to begin with? Self-selection bias. Lucas: It's a fair point. But they did try to control for it. They compared subscribers who opted into the podcast feed versus those who didn't, but both groups had similar open rates and click-through rates on email before the podcast launched. The podcast group wasn't inherently more engaged — it was the audio that created a deeper connection. There's something about hearing a person's voice that builds trust faster than text. It's the 'halo effect' of audio. Luna: Right. And that trust is especially important for a paid newsletter. If I'm going to pay $15 a month for your insights, I want to feel like I know you. A 5-minute daily podcast is basically a daily dose of personality. Lucas: Exactly. And it's not just about conversion. The podcast also opened up a new revenue stream: sponsorships. They started selling mid-roll ads in the podcast at roughly $50 CPMs, which is pretty standard for a niche B2B show. Within three months, the podcast was generating about $3,000 a month in sponsorship revenue — not huge, but it covers the production costs and then some. Luna: So the podcast pays for itself and also boosts newsletter subscriptions. That's a double win. But I imagine it only works if you can repurpose efficiently. Because creating a daily podcast from scratch would be exhausting. Lucas: That's the crucial piece. The 'Marketing Examined' podcast is essentially the newsletter read aloud with a little ad-libbing. It takes the writer maybe 15 minutes per episode: 5 to record, 10 to edit with basic noise removal and leveling. They batch-record a week's worth in one sitting. The key is that the newsletter script is already written — they're not writing for audio from scratch. Luna: That makes sense. But I've seen other newsletters do the opposite: they start with the podcast and then repurpose into the newsletter. Like 'Morning Brew' did with their 'Business Casual' podcast — it's a separate show, but they pull quotes and insights for the newsletter. Lucas: Right, and that can work too. But I think the purest play is the one where the newsletter is the core and the podcast is an extension. Because the newsletter has the highest lifetime value per subscriber — it's the asset you own. The podcast is a discovery tool. Spotify and Apple Podcasts have algorithmic recommendations that can surface your show to people who wouldn't find your newsletter otherwise. Luna: And that's a big deal. I looked up some numbers: the average podcast listener subscribes to 7 shows. So if your show gets into that rotation, you're in front of a highly engaged audience. Plus, podcast listeners tend to be older and have higher disposable income — which is exactly the demographic that pays for newsletters. Lucas: Exactly. And there's another data point I found compelling. A study by Podcast Insights found that 65 percent of podcast listeners have taken action based on a podcast ad or host recommendation. That's higher than any other medium. So if you're trying to convert listeners into newsletter subscribers, you have a receptive audience. Luna: So what's the ideal format for a newsletter podcast? Is it daily? Weekly? Long-form or short-form? Lucas: I think it depends on the newsletter's frequency. If you send daily, a 5-minute daily podcast works. If you send weekly, a 15- to 20-minute weekly show is better. The key is consistency. 'Marketing Examined' went daily because their email is daily. They wanted to reinforce the habit. If your newsletter is weekly, a daily podcast might feel like too much — you'd run out of content. Luna: Right. And you don't want to burn out. I've seen a lot of newsletter writers start a podcast and then quit after 10 episodes because it's too much. The ones that succeed are the ones that treat it as a repurposing engine, not a new creative project. Lucas: Exactly. And that brings me to another angle: the technical side. Once you have the podcast, you can use it to generate show notes, transcripts, social clips — all of which feed back into the newsletter ecosystem. One writer I know uses Otter.ai to transcribe his podcast, then pulls out the best quotes for a 'From the Podcast' section in his newsletter. That cross-pollination keeps both channels fresh. Luna: And it also helps with SEO. Podcast show notes with keywords can rank on Google, driving organic traffic to your newsletter sign-up page. That's an indirect growth channel that a lot of people overlook. Lucas: Right. So the strategy is clear: use the podcast as a top of funnel asset, the newsletter as the mid-funnel nurture, and the paid subscription as the bottom-funnel conversion. The podcast builds awareness and trust, the newsletter deepens the relationship, and the paid tier captures the value. Luna: I want to talk about the numbers behind listen-through rates for newsletter podcasts. I've heard that a lot of these short daily shows have surprisingly high completion rates. Lucas: Yeah, it's counterintuitive. You'd think people would drop off quickly, but the data shows that 5-minute daily podcasts have an average listen-through rate of about 80 percent. Compare that to longer shows, which often see 50 to 60 percent. The brevity is a feature, not a bug. People know they can get through the whole thing during their morning coffee. Luna: That's impressive. So the format really matters. If you go long, you might lose people. But if you keep it tight, you build a loyal audience that listens every day. Lucas: Exactly. And that daily habit is gold for conversion. Because every episode ends with a call to action — 'subscribe to the newsletter for more'. And if they're listening daily, they're hearing that call to action 5 or 7 times a week. It's hard to ignore. Luna: I think we're also seeing platforms incentivize this cross-format behavior. Spotify now allows podcasters to add a 'subscribe to newsletter' button directly in the show page. And Apple Podcasts has a similar feature. So the technical barrier to convert a listener into a subscriber is lower than ever. Lucas: Right. And I've noticed that some newsletter platforms, like Beehiiv, are building native podcast hosting. They want to keep the whole content loop inside their ecosystem. That tells me they see podcasting as a core part of the newsletter growth stack going forward. Luna: It's a smart move. If Beehiiv can offer one-click podcast to newsletter conversion, they become more sticky. And the newsletter writer gets a unified dashboard for email and audio analytics. Lucas: Exactly. So if you're a newsletter creator listening to this and thinking about starting a podcast, I'd say: do it, but keep it simple. Don't overproduce. Don't try to be a personality if that's not natural. Just read your newsletter and add a little context. If you can do that consistently for 6 months, I bet you'll see a meaningful bump in subscribers. Luna: I'd add: start with a pilot. Record 10 episodes, put them out, and see what the data says. If your listen-through rate is above 70 percent and you're getting even a handful of new subscribers per episode, it's worth scaling. Lucas: And you know, it's interesting — we talk a lot about growth tactics on this show, but this one feels different. It's not about hacks or algorithms. It's about building a real connection through someone's voice. That's hard to replicate with any other medium. Luna: Yeah, and I think that's why it works. Because newsletters are already intimate — they land in your inbox. A podcast adds the dimension of hearing the person behind the words. It's almost like a one-on-one conversation. Lucas: And speaking of that, we should mention that these conversations we have on this show are also part of that philosophy. We deliberately don't run ads on these episodes because we want the content to be pure and listener-supported. If you value that approach and want to support it, there's a link in the show notes: buy me a coffee dot com slash fexingo. No pressure — just if it's made a difference for you. Luna: Yeah, it's a small way to keep the show independent and ad-free. We appreciate every bit of support. Now, back to the podcast strategy — I want to talk about one more data point I came across. Lucas: What's that? Luna: I read a case study from a newsletter called 'The Hustle' — before they were acquired — where they added a podcast and saw a 15% increase in email sign-ups from their website. They added a simple 'Listen to our podcast' widget on their landing page, and that alone drove conversions. Lucas: That's a great point. The podcast becomes a trust signal. When someone lands on your newsletter page and sees you also have a podcast, it signals legitimacy. It says 'this is a real media operation, not just a side project'. Luna: Exactly. So even if people don't listen, just having the podcast badge can lift conversion. It's a subtle psychological cue. Lucas: Alright, so the takeaway from this episode: if you have a newsletter, consider adding a short, repurposed podcast. Keep it under 10 minutes. Use it to build trust, boost conversion, and open a sponsorship revenue line. And track your listen-through rate and free-to-paid conversion rate to measure success. Luna: And don't forget to add that podcast badge to your landing page. It might be the simplest growth hack of all. Lucas: Next episode, I want to talk about something that's been on my mind: the rise of 'podcast newsletters' — newsletters that are actually summaries of podcast episodes. It's a whole new category. Luna: I've seen that too. It's like the reverse of what we discussed today. Looking forward to it.