How to read Substack newsletters on the Kindle (without the app that does not exist)

Substack has one of the best reading experiences on the web, but the company chose not to ship a Kindle app. Anyone who wants to read Stratechery, Lenny's Newsletter or Money Stuff on a Paperwhite has to improvise. Workarounds exist, and some work better than others.

Why Substack ignores the Kindle

The platform lives off in-app engagement: comments, restacks, notifications. Moving the reader to an offline device works against the revenue engine. In interviews, the founders call Substack "a social network with long-form text". The Kindle does not fit that vision.

The practical consequence: paying subscribers are stuck inside email or the web app. Anyone who prefers an e-reader turns it into a daily chore. Save the PDF, transfer by cable, fix the typography that arrived broken.

The 3 approaches that work

1. Direct email forwarding. You add your Kindle address (the one ending in @kindle.com) as a destination in your inbox rules. When a newsletter arrives, it goes straight to the e-reader. The advantage is zero daily effort. The downside is typography: it depends on how Substack assembles the HTML, and tracking pixels and broken tables often leak through.

2. Web converters. Services like Stack to Book, Readbetter or Substack2Kindle take a URL and generate an EPUB. The typography beats raw forwarding, but you pay in manual effort per post. Some of these services do not handle paywalls.

3. Folio. Each account gets a private address in the format read+xxxx@folio.today. You forward any newsletter to that address and it lands on the Kindle as an editorial e-book. We automatically detect when an email is a Substack or Beehiiv newsletter and use the email HTML itself as the source. That preserves the full content, even for paywalled posts, because you already received the paid email.

Setup in 2 minutes

1. Create a free account at folio.today.
2. In settings, copy your private inbox address.
3. On Substack, open "Manage subscriptions" for the newsletter you want to redirect and keep "email" checked.
4. In your mail client (Gmail, Outlook, Fastmail), create a filter rule: emails from "newsletter@substack.com" forward to your Folio address.
5. The next edition lands directly on your Kindle.

Works for Stratechery, Lenny's, Money Stuff (Matt Levine), Casey Newton, or any other Substack or Beehiiv publication you already subscribe to.

What about weekly digests?

Newsletter volume keeps growing year over year. Subscribers to 5 or 6 publications end up hostage to the inbox. The Pro plan includes a weekly edition: every Monday morning, we combine the week's newsletters into a single e-book, with index, publication separators, and editorial pagination. You open the Kindle once and have an hour of quality reading.