Building one newsletter is hard.
Building multiple local newsletters that actually grow organically? That’s a different game.
In this episode of the LetterStack Podcast, we sit down with Danya Henninger, who scaled the Billy Penn newsletter from 8K to 40K subscribers without paid acquisition and now leads a multi-local newsletter ecosystem at Technically Media.
We break down:
How referrals drive real newsletter growth
Why local newsletters are still massively underbuilt
The exact content strategy that makes people forward newsletters
How to run multiple newsletters with a small team
Why weekly newsletters outperform daily in niche markets
The truth about organic growth in 2025
If you're building a newsletter, media brand, or local content business — this episode is packed with real operator insights.
⏱ Timestamps
00:00 Intro: Why local newsletters are exploding
01:00 Growing from 8K to 40K subscribers (no ads)
02:10 The #1 growth lever: referrals
03:30 Creating content people can’t find elsewhere
05:00 Experimenting with newsletter sections (A/B testing content)
07:00 Metrics that actually matter (beyond open rates)
08:30 Inside Technically’s multi-newsletter ecosystem
10:30 Do job boards really drive growth?
12:00 Audience overlap across newsletters
14:00 Newsletters as “community connective tissue”
16:00 Why niche local content wins
18:00 Running a newsroom: workflows, Slack, async ops
20:00 Why they moved from daily to weekly newsletters
22:00 The philosophy: newsletters as a product, not marketing
24:00 Mistakes, lessons, and funny newsletter fails
26:00 Launching a new newsletter in a new market
27:30 Discovery before launch: how to validate demand
29:00 Partnerships and distribution strategy
30:30 Monetization: underwriting vs ads
32:00 Final thoughts on building sustainable newsletter businesses
👉 Subscribe to LetterStack for operator-level interviews on building, monetizing, and scaling newsletters.