Every inbox you own,one quiet desk.

Postbox gathers every Gmail account you carry into a single dashboard — read, search, reply and send from one place, without ever handing over a password.

Open the dashboard
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In plain terms

Postbox is a free web app that connects several Gmail accounts to one combined inbox, so you can read, search, star, archive, reply and send across all of them without switching accounts.

Costs
Free. No paid tier, no trial, no per-mailbox charge.
Mailboxes
Unlimited Gmail and Google Workspace accounts.
Runs in
A browser. Nothing to install, no extension, no forwarding rules.
Password
Never asked for. You authorise on Google’s own screen.
Built by
Anuj Shetty, working alone.
Not to be confused with
The Postbox desktop email client, a different product, discontinued in 2024.

See it

Watch it work.

A short tour of Postbox, from the person who built it.

5 Gmail Accounts, One Inbox — I Built It Myself · Watch on YouTube

Why it exists

A hundred small switches,
every single day.

Multiple mailboxes is not one big problem. It is a thousand tiny ones — and they land where your attention is worth the most.

Anuj Shetty

Anuj Shetty · founder

It started as an ordinary annoyance. I was running several Gmail accounts at once — one per client, one for the work that pays, one that is just mine. Every hour of the day I was signing out of one and into another, checking whether something had landed, forgetting which window held which life.

Nothing was broken, exactly. It was just friction, repeated a hundred times a day, in the exact place where attention is most expensive.

The people I learn from are not working harder. They are building the system once, and letting it hold everything.

Watching operators like Dan Martell — and my own mentors — I noticed the same move made over and over. They do not add another tab. They orchestrate: connect the pieces, let one surface hold them, and stop paying the switching tax.

So I built the orchestration I wanted for mail. Every mailbox connected once, in one place, with the credentials encrypted and the access revocable in a click. Not another client. A desk that already has everything on it.

How it works

Three steps, then it is quiet.

No installer, no extension, no forwarding rules that break in a month.

01

Make an account

Email and a password, or one tap with Google. It is a Postbox account — never your Gmail password.

02

Connect a mailbox

Google’s own consent screen opens. You approve, Google hands back a token, and it is encrypted before it is stored.

03

Work from one desk

Read, search, star, archive, reply and send across every connected account. Changes are written straight back to Gmail.

What it does

Built for the way mail actually arrives.

Hover a card to see how each promise is kept.

Unlimited mailboxes

Connect as many Gmail accounts as you own. No tiers, no seat count, no upsell at account four.

how ↗

Each mailbox is its own OAuth grant, stored encrypted and bound to your account alone.

back ↙

One combined inbox

Every account in one stream, newest first, colour-coded — or filtered to a single mailbox in a click.

how ↗

Folders stay per-mailbox too: Starred, Sent and Drafts all switch between accounts without losing your place.

back ↙

Live, not stale

Gmail pushes changes the moment they happen, and the activity feed fills itself.

how ↗

Google Pub/Sub delivers a change notification; the server walks Gmail history and records only what moved.

back ↙

Reply from the right address

Replies go out from the account that received the message. The sending address is always shown.

how ↗

Threading headers are rebuilt from the original message, so conversations stay conversations in Gmail.

back ↙

Your credentials stay yours

No Gmail password is ever asked for. Tokens are encrypted before they touch a database.

how ↗

AES-256-GCM, bound to your user id, decrypted only server-side to call Google. Never sent to a browser.

back ↙

Leaves when you do

Disconnect a mailbox and the grant is revoked at Google, then deleted here.

how ↗

Delete everything and every token, credential, log and activity row goes with it. Gmail is untouched.

back ↙
Combined inbox
Gmail search
Send & reply
Attachments
Star & archive
Per-account views
Live push
Encrypted tokens
Activity history
Revoke anytime

Inside the app

One surface. Everything on it.

The dashboard, the combined inbox, connections and the composer — all real captures.

postbox — dashboard
Postbox Dashboard
Dashboardtotals, push status, live activity
postbox — combined inbox
Postbox Combined inbox
Combined inboxevery account, newest first
postbox — connections
Postbox Connections
Connectionsscopes, expiry, revoke
postbox — compose
Postbox Compose
Composesend from any connected address

Security

Trust is a design decision.

Every choice here is written down, and most of them are tested.

  • Never a Gmail password

    You authorise on Google’s own screen. Postbox has no field for it and never will.

  • Encrypted before storage

    Tokens and client secrets are sealed with AES-256-GCM, bound to your account.

  • Nothing reaches the browser

    Secrets are decrypted server-side only, to call Google. A live test asserts it.

  • Yours alone

    Every record is filtered by your user id, with row level security behind that.

  • Bodies stay in Gmail

    Message contents are read when you open them and are never written down.

  • Leave whenever

    Revoke at Google, or delete everything here in one action.

Asked

Straight answers.

What is Postbox?

Postbox is a free web app that connects several Gmail accounts to one combined inbox. You can read, search, star, archive, reply and send across every connected account from a single page, without signing out of one Google account to check another.

How much does Postbox cost?

Postbox is free and has no paid tier, no trial and no per-mailbox charge. It is an independent project built by one person rather than a funded company, so there is no upgrade to sell you and no limit that unlocks with payment.

How many Gmail accounts can I connect to Postbox?

There is no limit on the number of Gmail accounts you can connect to Postbox. Each mailbox is authorised separately through Google and appears in the combined inbox, colour-coded, with its own Inbox, Starred, Sent and Drafts views.

Does Postbox need my Gmail password?

No. Postbox never asks for a Gmail password and has no field to type one into. You authorise each mailbox on Google’s own consent screen, Google returns an access token, and that token is encrypted before it is stored.

Is Postbox the same as the Postbox email client for Mac and Windows?

No. They are two unrelated products that share a name. The desktop email client by Postbox, Inc. was acquired by eM Client and discontinued in 2024. This Postbox is a separate free web app, built by Anuj Shetty, for reading several Gmail accounts in one inbox.

All questions · About Postbox

Written down

The long answers.

Put every inbox
on one desk.

Free. No paid tier. Your credentials stay yours.

Open the dashboard