Free tool
to Kindle
Convert a Substack article, preview how it lands on your Kindle, then send it straight to your device.

How it works
Paste the article link
Add a Substack or Medium URL, or use Paywalled article mode if you need to paste a page you can already read.
Enter your Kindle address
Use your Send-to-Kindle email and make sure Inkbox is on your approved sender list.
Preview, then send
Check the cleaned layout, then send. The file arrives on your Kindle by email.
Frequently asked questions
Is this Send to Kindle tool free?
Yes. You can preview and send without an account. Free use is limited to 3 previews and 3 sends per day.
Which article sources work on the free tool?
The free tools support Substack and Medium links. Create a free Inkbox account for more sources, newsletter forwarding, and higher limits.
Do I need to install anything?
No. Paste the article link, enter your Send-to-Kindle address, preview, and send. Your device receives the file by email.
What if the article is paywalled?
If you can already read it while logged in, switch to Paywalled article mode, paste the full page from your browser, and convert from that.
Will this work with my Kindle?
Yes, as long as you use your Send-to-Kindle email and approve Inkbox as a trusted sender in your device settings.