[verdict][generated prompt][source: substack.com]
Can I vibecode Substack?
// the value is the network, the data or the infrastructure
A consolation build is possible, but the paid product's decisive value sits outside a solo rebuild. For Substack, publish posts and send email from a self-owned list without recreating discovery or payments. The hard boundary is reader network, recommendations, app distribution, payments, and brand familiarity, plus deliverability, growth network, and integrations.
confidence: high
what it is: Publish posts and send email from a self-owned list without recreating discovery or payments
Buildability index · an editorial game
- Price usage-based weight: zero
- Time closest consolation build: one sitting weight: minus 1
- Category newsletter no weight
- Moat network effects · infrastructure scale weight: minus 4
- Confidence high weight: plus 1
- What you lose 5 items weight: minus 2
- Site substack.com (si apre in una nuova scheda) no weight
It is not close. The prompt below rebuilds a piece, not the product.
Gioco editoriale: il verdetto dice se un agente può, l’indice se conviene.
What you build
Collect subscribers on a self-owned list, compose and send compliant email posts, publish a web archive, and report basic delivery and click events without recreating discovery or payments.
what you need
- Amazon SES account
- verified sending domain
- PostgreSQL
- public HTTPS deploy target
- DNS access
Editorial comparison targets the Platform fee plan and a single-publication newsletter DIY substitute. Recheck price before merge.
The prompt
The verdict is NOT REALLY, and the prompt stays anyway: it does not replace the app, it rebuilds the part that really is code. The rest is the moat.
Build a closest honest personal substitute for Substack in an empty repository.
Use Next.js 15, TypeScript, PostgreSQL, Drizzle ORM, and Amazon SES; do not offer alternative stacks.
The core loop is: collect subscribers on a self-owned list, compose and send compliant email posts, publish a web archive, and report basic delivery and click events without recreating discovery or payments.
Make the first run work locally with one documented command.
Store all user data locally by default and make export straightforward.
Put secrets in .env, ship .env.example, and never commit credentials.
Implement subscriber import, double opt-in, unsubscribe, suppression, tags, and consent timestamps.
Create a Markdown campaign editor with HTML and plain-text previews.
Queue sends through SES with retries, rate limits, idempotency, and resumable batches.
Process delivery, bounce, complaint, open, and click webhooks without logging message content.
Publish a simple issue archive and subscriber preference page.
Add test sends, seed-list checks, DNS setup guidance, exports, and backups.
Include clear empty, loading, success, and recoverable error states.
Add input validation, safe filenames, and graceful handling of unavailable APIs.
Write focused tests for the core transformation and one end-to-end happy path.
Create a README with setup, architecture, permissions, data location, and backup steps.
Do not add accounts, billing, telemetry, analytics, or a hosted control plane.
Do not claim to reproduce proprietary data, network liquidity, regulated access, or frontier infrastructure.
Deliberately leave out a newsletter recommendation marketplace.
Deliberately leave out ad sales and payment infrastructure.
Deliberately leave out complex lifecycle automation and enterprise deliverability support.
Finish by running the tests and listing the exact commands used.Prompt generated from the data on this page, not reviewed by hand yet. In English on purpose — it is the language coding agents work best in.
What you lose
- reader network, recommendations, app distribution, payments, and brand familiarity
- inbox-placement expertise
- advanced automations
- commerce integrations
- recommendation and ad networks
Why people still pay
People still pay for Substack because newsletter operators pay for inbox placement, growth mechanics, and operational confidence on publication day. The recurring cost buys DNS authentication, reputation, bounces, complaints, unsubscribe compliance, templates, queues, analytics, backups, and support, not just the visible interface.
moat: Network effects Infrastructure scale what a moat is
deliverability, growth network, and integrations
Free alternatives
Not in the mood to build it? These already exist, they are free or open source, and we checked them one by one.
Rejected (1) — and why
- Kit Free (si apre in una nuova scheda) — Public posts, recommendations and paid products are present, but Kit takes a platform cut on every sale.
Who has already built it
Starting from here is still vibecoding: the prompt is for when you want it exactly your way.
- Listmonk (opens in a new tab) — Mature open-source newsletter and mailing-list manager.
Do you agree?
The vote balance
Ancora nessun voto: il tuo è il primo.
Nessun voto ancora — il primo pesa.
