Onestack
A small tool for newsletter readers

All your Substacks,
one email.

Onestack collects the newsletters you already subscribe to and sends them to you as a single digest, on a schedule you choose. You get the full posts, each one linking back to the writer.

Free to use · no password to sign up · runs on donations

How it works

Four steps · about ten minutes to set up
1

Sign up and get your address

Enter your email below. Onestack gives you a private forwarding address that's yours alone—something like you.7f2c1a@onestack.umut.pub. There's no password; you'll get a token that lets you change your settings later.

2

Point your subscriptions at it

In each Substack's email settings, change the delivery address to your Onestack address—or set one forwarding rule in your inbox and let it catch them. Free and paid subscriptions both work, because Onestack reads the emails you already receive.

3

Choose your schedule

Daily or weekly, at a time and timezone you pick. You manage this any time from the settings panel below, using your token.

4

Read it in one place

On your chosen day, one email arrives with every new post, grouped by writer. Each item links straight to the original, so the writers keep their opens and clicks.

Get started

Create your address, or manage an existing one

Get your forwarding address

Enter your email. If you've signed up before with it, this just shows your address and token again—it doesn't create a duplicate.
Your forwarding address—point your Substacks here
Your token—keep this; it's how you sign in to change settings
What it costs

Free to use.

Onestack does cost real money to run—servers, and the email service that actually sends your digests. I'm not trying to make a profit on this; the most I'd ever want is to not lose money keeping it up.

Later on, if it's useful to you, you'll be able to chip in with a coffee—supporters would get a few small extras as a thank-you, never anything you actually need. The free version is the whole tool.

Still early access—I've got the costs covered for now. No coffee needed yet.

Questions

the obvious ones
How do I sign up and get my address?

Enter your email in the “Get started” box above. Onestack immediately gives you a unique forwarding address and a token. There's no password step—the token is what you use later to change your settings.

How do I log in and manage things?

Open the “Manage my settings” tab above and paste your token. From there you set frequency (daily or weekly), the day, the send hour, and your timezone. Lost your token? Just re-enter your email in the sign-up box—it returns the same address and token, it won't create a second account. (A proper email-based login is planned; token-based is the honest current state.)

Does it work with paid Substacks?

Yes. Onestack reads the emails you already receive as a paying subscriber, so paid posts come through in full. Tools built on public RSS can't do that, because Substack truncates paid content in feeds.

Do the writers still get credit?

Every post in your digest links straight to the original, so opens and click-throughs still land with the writer. The whole idea is to help you follow more people, not to stand between you and them.

Is my email private?

Your forwarding address is unique to you and never shown publicly. Onestack parses your incoming posts only to build your digest—no reselling, no injected ads.

Is this an AI summarizer?

No. You get the actual posts. Summaries are optional, off by default, and even when on they're a single line above the full excerpt—a triage helper, never a replacement.