Module 2: Finding Your Newsletter Niche
AI Newsletter Business
The biggest mistake new newsletter creators make is going too broad. "AI news" is too broad. "AI for real estate agents" is a business. "Marketing tips" is too broad. "Email marketing for e-commerce brands doing £1-10M" is a business.
The Niche Selection Framework
A profitable newsletter niche needs three things:
1. Audience with money (or access to money)
Your subscribers need to either spend money themselves or influence spending decisions. B2B niches win because businesses spend more than consumers. A newsletter for CFOs is worth more to sponsors than a newsletter for dog lovers — even if the dog newsletter has more subscribers.
Highest-value audiences: Founders, marketers, developers, finance professionals, healthcare executives, e-commerce operators, real estate investors.
2. Consistent content supply
Can you write about this topic every week for 2+ years without running out of material? Some niches feel exciting for a month but dry up fast. Choose something with a constant stream of news, trends, tools, and developments.
Test: Search your topic on Google News. If there are 10+ new articles per day, content supply isn't a problem.
3. Underserved information need
Don't start a newsletter where five established players already dominate. Find the gap. Maybe the existing newsletters are too technical, too American, too infrequent, or miss a specific sub-audience.
Codie Sanchez built Contrarian Thinking (newsletter about buying boring businesses) by identifying that entrepreneurship content was dominated by tech startup advice. Nobody was talking to the person who wanted to buy a laundromat. She now has 500K+ subscribers and a media company.
Put the niche selection steps in the correct order:
Niches That Print Money in 2025
Based on Beehiiv marketplace data and sponsor demand:
- AI for [specific profession] — Lawyers, accountants, recruiters, marketers. Each profession needs AI guidance tailored to their context.
- Investing/finance for [demographic] — UK property investing, crypto for beginners, retirement planning for millennials
- E-commerce operations — Shopify tips, supply chain, DTC brand building
- SaaS/dev tools — Developer-focused newsletters command the highest CPMs ($40-75)
- Local business/city-specific — 6AM City raised $30M building local newsletters. Your city probably doesn't have one.
- Career development for [industry] — Job market insights, salary data, interview tips for specific professions
What makes a newsletter niche profitable?
The "Anti-Niche" Trap
Some people hear "niche down" and choose something so narrow there's no audience. "AI for left-handed chiropractors in Bristol" is not a niche — it's a mailing list of three people.
The sweet spot: Narrow enough that readers feel "this is for me," broad enough that 50,000+ people could potentially subscribe. If you can find 20+ active online communities (subreddits, Facebook groups, Slack channels) for your topic, the audience exists.
Validating Before You Build
Before writing a single issue:
1. Search competing newsletters on Beehiiv Explore, Substack directory, and Newsletter Stack. Read 5 issues of each competitor. Note what they do well and what's missing.
2. Check sponsor demand on Passionfroot and SparkLoop. If brands are already paying to reach your audience, the market is proven.
3. Test on social media. Post 5-10 pieces of content about your topic on LinkedIn or Twitter. If they get engagement from your target audience, you have product-market fit.
---
Niche Validation
Evaluate this newsletter niche: [YOUR NICHE IDEA] Analyse: 1. Estimated audience size (how many people fit this description?) 2. Audience purchasing power (what do they spend money on?) 3. Sponsor attractiveness (which brands would pay to reach them? Estimate CPMs) 4. Content sustainability (can I write 100+ weekly issues without repeating?) 5. Competition analysis (who else covers this? What's their weakness?) 6. Growth channels (where does this audience hang out online?) Score this niche 1-10 on profitability potential with explanation.
Competitive Gap Analysis
Here are the existing newsletters in the [NICHE] space: [LIST 3-5 COMPETITOR NEWSLETTERS WITH BRIEF DESCRIPTIONS] Identify: 1. What they all have in common (format, tone, frequency) 2. What none of them do well 3. Underserved sub-audiences within this niche 4. Content formats they're not using 5. The specific gap I could fill Suggest 3 positioning angles that would differentiate a new newsletter.
Audience Persona
Create a detailed persona for the ideal subscriber of a newsletter about [TOPIC]: Include: 1. Demographics (age, role, income, location) 2. Information diet (what they currently read, listen to, watch) 3. Pain points (what frustrates them about current information sources?) 4. Goals (what do they want to achieve by reading my newsletter?) 5. Willingness to pay (would they pay for premium content? How much?) 6. The sentence they'd use to describe the newsletter to a friend Make this specific enough that I could spot this person at a conference.
1. List 5 potential niches you could cover
2. Run each through Prompt 1 — score them all
3. For the top 2, do Prompt 2 (competitive gap analysis)
4. For your #1 choice, build the audience persona with Prompt 3
5. Make your final decision. Write it in one sentence: "My newsletter is [NAME] — it helps [AUDIENCE] with [VALUE PROPOSITION], published [FREQUENCY]."
Commit to this. Change it later if needed, but start now.
---
- 1Narrow niche + wealthy audience beats broad topic every time — Lenny proves this at $5M/year
- 2Your niche needs three things: audience with money, content sustainability, and an underserved gap
- 3B2B niches pay more because businesses spend more than consumers
- 4Validate before building: check competitors, sponsor demand, and social media engagement
- 5The sweet spot is narrow enough to feel personal, broad enough for 50,000+ potential subscribers