Template pack for solo newsletters

Your next four issues, already planned.

Solo Newsletter OS is a set of templates for publishing a newsletter every week on your own: a 4-week content calendar, 100 subject lines, an issue checklist, a KPI tracker and a one-issue launch SOP.

Get the pack — $39See the free sample

One-time payment · 8 files in a ZIP · works with any email platform

Who it’s for

A good fit if you…

  • are launching a newsletter in the next 30 days
  • keep restarting because the process falls apart by week 3
  • are an indie hacker or freelancer who wants a simple weekly routine
  • would rather fill in templates than read another motivational ebook

Not a fit if you want…

  • promises of subscribers or income
  • multi-seat team or approval workflows
  • someone to write or send your issues for you
  • a video course

What’s in the ZIP

The actual file names you get, and what each one does.

README.mdSet up in 30 minutes: what to open first, the suggested weekly cadence, and the licence.
content-calendar-4week.mdFour rotating weekly angles. Each week has slots for the hook, three sections, CTAs, subject lines and preview text, plus a prompt for when you’re stuck.
content-calendar-4week.csvThe same calendar, ready to import into Google Sheets, Notion or Excel.
subject-line-swipe-bank.md100 original subject lines in 9 types, from curiosity to roundup, with tips on which type suits which issue.
issue-checklist.mdPre-publish, publish and post-publish checks, including footer and unsubscribe, a dark-mode test and a 5-minute emergency issue.
launch-sop.mdOne issue end to end, from research at T−48h to review at T+48h, with a table of common problems and fixes.
kpi-tracker.csv · kpi-tracker.xlsxLog delivered, opens, clicks, new subscribers, unsubscribes, replies and revenue for each issue. 12 issue rows ready to fill.

Try it first. Get 10 subject lines and Week 1 of the calendar for free, with no email address needed.

Open the free sample

Free guides: build a content calendar · subject line examples · launch checklist

Buy Solo Newsletter OS — $39

You pay in USDC (a dollar stablecoin) on the Base network. New to crypto? It takes about 5 minutes with the Coinbase app. Read the beginner guide.

You need about $40 of USDC on the Base network first. How to get it.

Step 1. Get your order. It gives you an exact amount, about 39 USDC plus a few thousandths of a cent, so the store can tell your payment apart from anyone else's.

Step 3. Paste your transaction hash. Your order code fills in automatically on this device. Keep it: it's your receipt.

USDC contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base (chain 8453). Store address 0x8ca7ae7A69312a37a11bDA85b8D13b79e9De944e.

Questions

Who is Solo Newsletter OS for?

Solo creators, indie hackers, freelancers and writers starting or restarting a free or paid newsletter who want a simple weekly process rather than a course.

What is in the download?

A ZIP with 8 files: a 4-week content calendar (Markdown and CSV), 100 original subject lines in 9 types, a pre-publish, publish and post-publish issue checklist, a KPI tracker (CSV and Excel), a one-issue launch SOP, and a README with a 30-minute setup.

Does it work with my email platform?

Yes. The files are plain Markdown, CSV and Excel, so they work alongside Beehiiv, Buttondown, Kit, Substack or any other platform. Open them in Notion, Google Sheets, Excel or a text editor.

Is this a course?

No. It is a set of templates and a step-by-step SOP. Read the README, then fill in Week 1.

Will it grow my list?

Not on its own. It helps you publish consistently and track what happened. Growth still depends on your topic, your offer and your distribution. There is no guarantee of subscribers or income.

I have never used crypto. Can I still buy it?

Yes. Buy USDC in the Coinbase app or a wallet, create an order at checkout, send the exact amount it shows on the Base network, then paste the transaction hash. The step-by-step guide is at /how-to-pay.

How fast is delivery?

You can download as soon as your transaction confirms on Base, which usually takes under a minute. Paste the transaction hash and the ZIP downloads in your browser.

Why is the price 39.00-something USDC?

Each order gets a unique amount, 39 USDC plus less than one cent, and a private order code. Transaction hashes are public, so this is what stops someone else from claiming your payment.

Can I use it for client newsletters?

Yes, for newsletters you deliver yourself. You may not resell or redistribute the pack.

What if the download fails?

Submit the same order code and transaction hash again; each order can download up to 5 times. If that does not work, email soloearn@agentmail.to with both.

Is it a subscription?

No. It is a one-time payment of $39 (paid as 39 USDC plus a unique amount under one cent) and you do not need an account.

For AI agents and developers

GET https://solo-newsletter-os.soloearn.workers.dev/download returns HTTP 402 with an x402 v2 payment challenge (exact scheme, USDC on Base). Automatic x402 settlement is not switched on yet. For now, POST https://solo-newsletter-os.soloearn.workers.dev/order to get an order code and an exact amount, send that amount, then POST https://solo-newsletter-os.soloearn.workers.dev/claim with {"orderId":"…","txHash":"0x…"} to receive the ZIP. Payment details as JSON: https://solo-newsletter-os.soloearn.workers.dev/pay. See also llms.txt. Want the same checkout for your own file? It’s packaged as the x402 Seller Kit.