Latest / The Newsletter Podcast with Fexingo: Substack, Beehiiv, and Email Newsletter Business / Why Newsletter Sponsorships Outperform Social Ads
Transcript
- Lucas: There's one number that I think every marketer should have tattooed on their forearm this year, and it's from a study the Association of National Advertisers published last fall. It found that newsletter sponsorships drive twenty-seven percent higher purchase intent than social media ads. Luna: Twenty-seven percent. That's not marginal. That's the difference between a campaign that breaks even and one that actually scales. Lucas: Exactly. And what's interesting is that this isn't coming from newsletter platforms trying to sell you on the format. The ANA is the trade group for the biggest advertisers in America — Procter and Gamble, Unilever, the Fortune 500 crowd. So when they publish a stat like that, it's not hype. Luna: And it tracks with what we've been seeing in the data from Morning Brew and The Hustle. Those newsletters have been publishing their sponsorship metrics for years, and the pattern is consistent. Lucas: Right. Morning Brew, which started as a daily newsletter for business news and now reaches over four million subscribers, has always been transparent about the fact that their sponsored content generates click-through rates that are three to five times higher than the industry average for display ads. But the click-through is just the surface. What matters is what happens after the click. Luna: And that's where the twenty-seven percent number comes in. It's not just about opening an email or clicking a link. It's about actually buying the product. Lucas: So the question is: why? Why does a sponsored mention in a newsletter outperform a highly-targeted Instagram ad or a promoted tweet? Luna: I think a lot of it comes down to what you might call the 'inbox trust' factor. When someone subscribes to a newsletter, they are voluntarily letting that sender into a private space. The inbox is not a public feed. It feels personal. Lucas: That's a crucial distinction. On social media, the algorithm decides what you see. On email, the subscriber decides. And because the relationship is opt-in, the tolerance for promotional content is much higher. In fact, loyal newsletter readers often view sponsored recommendations as a value-add — a curated suggestion from a trusted source. Luna: There's a really good example from The Hustle. Before HubSpot acquired it, The Hustle ran a sponsored campaign for a company called Theragun, the percussive therapy device. The email generated something like a four percent click-through rate, which is already high, but the conversion rate — the number of people who actually bought the product — was well above what Theragun was seeing from any other channel. Lucas: And Theragun wasn't a tiny startup. They had a big social media budget. But the newsletter audience, which at the time was about one point five million subscribers, converted at a higher rate because those subscribers trusted the editorial voice of The Hustle. They felt like they were getting a tip from a friend, not an ad from a brand. Luna: That's the core of it. The newsletter writer is essentially acting as a recommender. And that recommendation carries social capital. The writer isn't going to recommend something that would damage their relationship with the reader. Lucas: So the economics are fundamentally different. On social media, you are renting the audience from the platform. On email, you own the relationship. That's why a newsletter with fifty thousand subscribers can drive more revenue per impression than a social account with five hundred thousand followers. Luna: And that's a huge shift from the last decade, where the mantra was 'go where the audience is'. Now the smartest marketers are realizing that it's better to have a smaller audience that trusts you than a huge audience that scrolls past you. Lucas: The ANA study also broke down the twenty-seven percent number by industry, and the gaps were widest in financial services and B2B software. Those are categories where trust is paramount, and where a recommendation from a respected newsletter writer can shortcut a long sales cycle. Luna: Let's talk about the flip side, though. Newsletter sponsorships aren't a silver bullet. There are plenty of newsletters that run terrible sponsored content — generic copy, no personal endorsement, just a banner at the top. And those perform exactly like a bad display ad. Lucas: Absolutely. The magic only works if the sponsorship is integrated into the editorial voice. The best newsletter sponsorships don't read like ads. They read like a natural extension of the content. Morning Brew does this really well — they have a section called 'Words of Wisdom' that is often sponsored, but it's written in the same witty, conversational tone as the rest of the newsletter. Luna: And they clearly label it as sponsored. They're not trying to trick anyone. The trust comes from transparency, not deception. Lucas: Right. So the takeaway for anyone running a newsletter — whether on Substack, Beehiiv, or your own platform — is that your sponsorship inventory is more valuable than you might think. But you have to protect the editorial integrity that makes it valuable in the first place. Luna: And for brands looking to sponsor newsletters, the advice is: don't just send a generic ad copy. Work with the writer to craft something that feels authentic to their voice. The ROI will be higher. Lucas: We should pause here and mention something that makes this show possible. If today's episode was useful to you and you want to keep it ad-free, buy me a coffee dot com slash fexingo helps. A handful of listeners chip in monthly through that link — that's literally what funds these conversations. Luna: Yeah. It's how we keep the show independent and free for everyone. Lucas: So back to the newsletter sponsorship question. One thing I've been tracking is how the rise of platforms like Beehiiv is making it easier for smaller newsletters to get sponsors. Beehiiv has an ad network that matches newsletter writers with brands, and the minimum subscriber count to join is often as low as a thousand. Luna: That's democratizing the market. It used to be that only the big players — Morning Brew, The Hustle, The Skimm — could attract national advertisers. Now a niche newsletter about, say, custom mechanical keyboards can get a sponsorship from a keyboard manufacturer and make decent money. Lucas: Exactly. And the data from Beehiiv's network shows that even small newsletters can generate strong engagement. A newsletter with two thousand subscribers might only make a few hundred dollars per sponsorship, but if the audience is highly targeted, the conversion rate for the advertiser can be excellent. Luna: So it's a win-win. The advertiser gets a laser-focused audience, and the writer gets paid without having to sell their own product. Lucas: Now, one critique I sometimes hear is that newsletter sponsorship is just a fad — that as more brands pile in, the novelty will wear off and the click-through rates will drop. But I don't think that's likely, because the underlying mechanism — trust — is not a novelty. It's a structural advantage of email. Luna: And social media is only getting noisier. Algorithms are pushing more content, users are more skeptical, ad blockers are more common. The inbox remains one of the few digital spaces where the user is actually paying attention. Lucas: There's also the fact that email isn't going away. The average office worker still checks their inbox dozens of times a day. And for B2B marketing in particular, email is still the highest roi channel according to multiple studies. Luna: So if you're a marketer listening to this, what's the one concrete step you should take? Lucas: I think the most actionable thing is to test a newsletter sponsorship if you haven't already. Start with a small, niche newsletter in your industry. The CPM — cost per thousand impressions — is often lower than social media, and the conversion rate is higher. You'll get cleaner data because you can track the campaign with a unique URL or discount code. Luna: And if you're a newsletter writer, the advice is to build a media kit. Even if you only have a few thousand subscribers, having a one-page PDF with your audience demographics, open rates, and past sponsorship examples makes you look professional and can help you land higher-paying deals. Lucas: One last data point that I think is really telling: a study by Litmus found that email marketing has a median ROI of thirty-six dollars for every dollar spent. That's not just for newsletters — that's all email marketing. But newsletters are the fastest-growing segment, and the sponsorship model is a big reason why. Luna: So the twenty-seven percent number from the ANA is just the headline. The real story is that newsletter sponsorships work because they leverage trust, and trust is the scarcest resource in marketing right now. Lucas: I'd add that the next frontier is going to be dynamic sponsorships — where the ad inside the newsletter changes based on the reader's behavior or preferences. Beehiiv already offers some level of targeting. Substack is experimenting with it. That will only make the channel more effective. Luna: But the core principle stays the same: a recommendation from a trusted voice in a private space is worth more than a thousand impressions in a public feed. Lucas: Perfectly put. That's the takeaway.