For Fastmail

Mailroom

One-label email triage for Fastmail

Bring the power of HEY and Google Inbox triage workflows to Fastmail. One label tap routes an entire sender — forever.

View on GitHub

How it works

From unknown sender to auto-routed — in one tap

1

Email lands in Screener

An unknown sender's email arrives. Fastmail routes it to your Screener inbox.

Screener
2

You apply a label

One tap on your phone — apply @ToImbox to Alice's email. That's it. You're done.

3

Mailroom takes over

Mailroom picks it up on the next poll. Creates a contact for Alice, adds her to the Imbox group, and sweeps all her emails out of Screener.

AC
Alice Chen
Imbox group
3 emails swept to Imbox
4

Future emails auto-route

Alice is now a known contact. Every future email from her skips the Screener entirely and lands in your Imbox.

New email from Alice
Imbox

Built for peace of mind

Everything you need for effortless email triage

Smart Triage

One label routes an entire sender. All their backlogged emails move to the right destination, and every future email auto-routes — no repeat work.

Contact Intelligence

Automatically creates contacts — person or company — and assigns them to the right group. Display names are extracted and preserved.

Retry Safety

If something fails, the triage label stays put. The next poll picks it up and tries again automatically. Nothing slips through the cracks.

Fully Configurable

Labels, contact groups, polling interval, destinations — all customizable via environment variables. Fits your Fastmail setup, not the other way around.

Built to grow

Mailroom is just getting started. The engine is open source and designed for extensibility.

Hosted service
Rule builder UI
Multi-provider support
And more coming