Paperboat Letters
Trust
Five companies help us run Paperboat Letters. Here they are, what they do, and what none of them are permitted to do with your writing.
Subprocessors
- Anthropic
Prompt structuring — your replies pass through their API so Atlas can tag themes and generate the next question.
- Resend
Email delivery — the weekly prompt and your confirmation emails.
- Supabase
Database — your replies and account details are stored here, in the AU/EU region.
- Stripe
Payment processing — handles your one-time payment when you lock an outline. Paperboat never sees your card number.
- Vercel
Hosting — the web server that serves every Paperboat page.
None of them train on your writing. This is Anthropic’s stated API policy and a condition of our continued use of each service.
Where your data lives
Your replies and account details are stored in Supabase, in the AU/EU region. Email delivery logs are held by Resend in the US for up to 30 days. Payment metadata is held by Stripe. Paperboat does not store your card details.
How long we keep it
While your account is active, your replies are kept so Atlas can read them back to you and so you can download them. If you stop writing for 24 months, we will notify you before deleting anything. You can request deletion at any time — we will action it within 30 days, and backups will purge within 90.
What we will never do
- Train any model on your writing — not now, not later.
- Sell your replies or account data to third parties.
- Share your writing with advertisers or partners.
- Generate prose in your name without your explicit consent.
- Hand your writing to anyone outside the subprocessors listed above.
The only humans who can read your replies are you and the Paperboat founders — on your request, for support purposes only.
A note from Anna
“I built Paperboat because I wanted a memoir tool that didn’t pretend to know my voice better than I do. Privacy isn’t a legal formality here — it’s the whole point. Your words belong to you. If anything about this feels off, email me directly: anna@paperboat.club.”
— Anna McPhee, founder