Does it work with Substack and paid newsletters?

Yes. Anything that arrives as an email — Substack, Beehiiv, Mailchimp, paid or free — can be auto-forwarded to your Airbox address and folded into the digest.

Do I need a paid plan for digests?

Per-email summaries and replies work on the free plan. Digest mode — where Airbox holds incoming mail and sends one combined briefing on a daily, weekly, or monthly schedule — is a Pro feature, since it runs on a schedule on your behalf.

Can I get a weekly digest instead of daily?

Yes. Digest mode supports daily, weekly, or monthly windows, with the send day and time you choose in your own timezone.

Is it safe to point Airbox at my real email?

Yes — that's exactly what Airbox is designed for. Airbox only acts on mail from senders you allow, and it only treats the subject and first body line (or a (* … *) block) as instructions. Everything else in a forwarded email is quarantined as untrusted content and never obeyed for your own security and privacy. Your API keys stay fully encrypted.

Turn newsletters & Substacks into a daily digest

The short answer

To turn your newsletters into a daily digest, create a dedicated Airbox inbox, auto-forward your newsletters and Substacks to it, and turn on digest mode. Airbox holds the incoming issues and, at the time you choose, sends one AI-written briefing of the highlights — so a dozen newsletters become a two-minute read instead of an unread pile.

1. Set it up

About five minutes, once:

In the Airbox dashboard, create an inbox just for newsletters (e.g. point a fresh address at the Newsletter digest recipe) and connect your AI provider key. To make it easier to remember, prefix the address with 'newsletters-' or something similar
Turn on digest mode for that inbox: pick a window (daily, weekly, or monthly), a send time, and your timezone
In Gmail, Outlook, or Apple Mail, add a filter that auto-forwards messages from your newsletter senders to that Airbox address

2. How the digest is built

Each forwarded issue lands in your newsletter inbox, where Airbox holds it instead of replying one-by-one. When your scheduled time arrives, it passes the batch to your AI and emails back a single briefing — top stories, why they matter, and links to read the full piece.

You control the style with a one-line digest instruction. Want bullet headlines only? A section per source? Just the items relevant to a topic? Set it once and every digest follows it.

3. Shape the output

Set a digest instruction like this on the inbox to control the format:

Summarize today's newsletters as 5–8 bullet headlines, each one
line, grouped by source, with a link to read more. Skip ads and
job listings. Lead with anything about AI or my industry.

No instruction? Airbox writes a sensible highlights digest by default.

What you get

One short read instead of 15 unopened newsletters
Your own AI model and key — no per-summary markup
Highlights tuned to what you actually care about
Everything stays threaded in the inbox you already use

Frequently asked questions

Does it work with Substack and paid newsletters?: Yes. Anything that arrives as an email — Substack, Beehiiv, Mailchimp, paid or free — can be auto-forwarded to your Airbox address and folded into the digest.
Do I need a paid plan for digests?: Per-email summaries and replies work on the free plan. Digest mode — where Airbox holds incoming mail and sends one combined briefing on a daily, weekly, or monthly schedule — is a Pro feature, since it runs on a schedule on your behalf.
Can I get a weekly digest instead of daily?: Yes. Digest mode supports daily, weekly, or monthly windows, with the send day and time you choose in your own timezone.
Is it safe to point Airbox at my real email?: Yes — that's exactly what Airbox is designed for. Airbox only acts on mail from senders you allow, and it only treats the subject and first body line (or a (* … *) block) as instructions. Everything else in a forwarded email is quarantined as untrusted content and never obeyed for your own security and privacy. Your API keys stay fully encrypted.

Ready to try it?

Get your private Airbox address and send your first AI-routed email in minutes. Free to start — bring your own AI.