Cloudflare-native. Agent-ready. Open source.

Tiny email.
Big agent energy.

Disposable inboxes as a primitive. Create one, catch the message, reply if you need to, then let it vanish.

Make a little inbox Read the source

One Durable Object per inbox
CLI, TypeScript, and remote MCP
Hard-deletes on expiry

Your tiny inbox keen-otter-7k2m4p9x@mail.inboxlet.dev waiting for mail

01 / LITTLE BY DESIGN

An inbox that
leaves no crumbs.

Friendly on the outside. Capability-secured, strongly consistent, and ephemeral underneath.

01

Create

Get a friendly address and a private capability in one API call.
inboxlet create --ttl 1h
02

Wait

Pause your workflow until the verification, reply, or notification arrives.
inboxlet read --wait 5m
03

Disappear

Delete it now or let its alarm erase every message when time is up.
inboxlet delete --yes

02 / PICK YOUR DOOR

From zero to
inbox in a minute.

Deploy your own server, set one API key, and use whichever interface your agent already speaks.

The server API key creates inboxes. Each inbox gets its own short-lived capability.

03 / CONNECT THE PIPES

Give it ears.
Give it a voice.

Deploying gets the Worker online. Two Cloudflare email switches connect it to the outside world.

01

Pick a domain

Set the address.

Choose a Cloudflare-managed domain and set MAIL_DOMAIN.
mail.yourdomain.com
02
Cloudflare Email Routing
Catch every inbox.

Onboard the domain, then send its catch-all rule to your Inboxlet Worker.
catch-all -> Worker: inboxlet
03
Cloudflare Email Sending
Wire up replies.

Onboard the same domain. The EMAIL binding is already included.
EMAIL -> send_email

Read the full setup guide

04 / SEND THE AGENT

A little inbox,
right when you need one.

Built for sign-ups, verification links, approvals, notifications, and tiny adventures.

Start tiny Star on GitHub