Weekly insights, tips, and tools to help you grow as a writer and learn from the best.
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 97 | Founded | 2 years ago | Last Issue | 12 days ago |
| Active | |||||
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finntropy.substack.comLatest Issues
I Built a Perfect Swipe File. I Opened It Zero Times.
My swipe file wasn't a museum. It was a storage unit.
I learned about swipe files from Justin Welsh.
The pitch is seductive. Great creators don’t start from blank pages. They collect. Every banger headline, every hook that stopped their s...
Claude Pushed the Subject Line I Wouldn't Send. One Email Sold for 25 Days.
The comedian finally has a room. It only took a year — and one subject line I almost didn't send.
Twelve months ago, I published I Built a Note-Writing AI That Learns From Its Own Mistakes — a 32-billion-parameter model on my MacBook, writ...
336 of My Subscribers Are Already Ghosting Me. Substack Never Flagged a Single One
I ran one question against my own list.
336 names came back.
People who opened five of my emails — then nothing for thirty days. Not strangers. Not tire-kickers. Readers who were in the room with me. Warm. Engaged. Already halfway out the...
I built StackSave — save any Note on Substack
Comment @stacksave before it scrolls away — then search your archive at stacksave.live.
The problem (in case you missed the survey)
Substack’s save button only works on posts. The best stuff is usually somewhere else — a sharp Note,...
Your Subscribers Already Belong to Someone Else's Graph
581 subscribers arrived through 49 peer recommendations. The top 12 sources account for 472 (81%).
Thirty of them got nothing back. I have the query results sitting in a spreadsheet.
In 2024, I published a Sankey diagram of follower overl...
Audience Metrics
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| Subscribers | Engagement | 74 | Monthly Web Visits | ||
|---|---|---|---|---|---|
| Accepts Sponsors | Estimated Cost per Ad | ||||
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Authors
The writers behind this newsletter.
You know your subscriber count. You don't know which note drove it. I build tools that close that gap. One creator found $400 in hidden sales from a single query. Schedulers, AI analytics, dashboards: finntropy.gumroad.com
You know your subscriber count. You don't know which note drove it. I build tools that close that gap. One creator found $400 in hidden sales from a single query. Schedulers, AI analytics, dashboards - store: https://finntropy.gumroad.com
Keep the best Notes, posts, and comments on Substack — and show the writer they were worth saving. Reply @stacksave, then search your archive at stacksave.live/landing
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