Why building a newsletter on Substack costs you more than you think
You have something to say. A weekly analysis, a curated industry digest, a deep-dive into a niche. You start on Substack or Beehiiv because it is easy. Then you grow, and the cracks appear.
Hosted newsletter platforms come with hidden costs:
- Substack takes 10% of every paid subscription, for life
- You cannot truly customize the design, the homepage, or the reader experience
- You do not fully own your subscribers, the data lives on someone else's platform
- Migrating to another tool means losing your archive URLs and SEO
- You cannot add custom features: paywalled sections, member-only podcasts, gated communities
- Your domain is hosted by them, not by you
At 1,000 paid subscribers at €10 a month, Substack keeps €1,000 a month. That is a developer salary you are paying for a tool you do not control.
How RunMyStartup builds your newsletter platform
Tell your AI team what you want to publish, who reads you, and how you want to monetize. Your 8 specialized agents take it from there:
- Your CEO agent turns your editorial idea into a clear product plan: free and paid tiers, member areas, archive structure
- Your Developer agent builds your newsletter platform with Next.js, TypeScript, and Tailwind CSS, with a homepage, archive, reader, and member dashboard
- Your DevOps agent deploys it on a real server with your own domain and SSL
- Your Accountant agent configures Stripe subscriptions for monthly and yearly plans, plus one-time purchases for back issues
- Your Emailing agent sets up the full delivery pipeline: welcome sequences, issue broadcasts, payment receipts, and churn recovery emails
- Your Growth agent makes every public issue indexable by Google, so new readers find you organically
- Your Marketing agent generates social posts to promote each new edition
You approve every step. You stay in control of voice, design, and pricing.
What is included from day one
Everything you need to run a real paid newsletter, from day one:
- A live newsletter site with public homepage, archive, and individual issue pages
- A subscriber sign-up form with email confirmation
- Stripe subscriptions for monthly and yearly paid memberships
- A member dashboard so subscribers can manage their billing and preferences
- An admin dashboard to write, schedule, and broadcast new issues
- Email delivery built in: welcome emails, broadcast emails, payment confirmations
- A dedicated PostgreSQL database that stores your subscribers and your archive
- Built-in analytics: open rates, click rates, subscriber growth, revenue
- Your own domain name (from the Founder plan at €39/month)
- Full source code access via GitHub (from the Studio plan at €99/month)
From idea to live newsletter in 3 steps
Step 1: Describe your newsletter. What do you publish? Who is your reader? Free, paid, or both? Use your own words.
Step 2: Your AI team builds the platform. You watch the design come together, request changes, and approve each milestone before it goes live.
Step 3: Your newsletter is online. You write your first issue, hit send, and your subscribers receive it from your domain. Stripe handles the payments.
You might be thinking this sounds too complex for someone who is not technical. It is not. You describe, the agents build, you validate. No code, no servers to configure, no DNS to debug.
Who builds a newsletter platform with RunMyStartup
- Independent writers and journalists who want to own their audience and keep 97% of revenue
- Industry analysts publishing premium weekly research for a niche professional audience
- Creators who outgrew Substack and want a real branded product
- Solo media operators bundling a newsletter, a podcast, and a community in one place
- Coaches and consultants who use a paid newsletter as a lead generation engine for higher-tier services
Pricing
Start for free with the Discovery plan (1 project, 4 AI agents, 15 credits). Upgrade to Founder at €39/month for Stripe subscriptions and your own domain. Studio at €99/month adds full source code access and the complete AI team of 8 agents.
RunMyStartup takes a 3% commission on revenue generated through your platform's payments. Substack takes 10%. At 1,000 paid subscribers at €10 a month, that is €700 a month back in your pocket.