Multi-Account Gmail

Name: Multi-Account Gmail
Author: cunicopia-dev

by cunicopia-devversion 0.3.0i★ –iRuns on your computer

Registry nameio.github.cunicopia-dev/multi-account-gmail-mcp

Install

Overview

Description from the maker (original English)

Multi-account Gmail MCP server — read, search, draft, and label across every inbox.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Chat & email

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: GMAIL_MCP_CLIENT_SECRET, GMAIL_MCP_DB, GMAIL_MCP_OAUTH_PORT

You need

PyPIPython’s uv installed (for the uvx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "multi-account-gmail": {
      "command": "uvx",
      "args": [
        "multi-account-gmail-mcp"
      ],
      "env": {
        "GMAIL_MCP_CLIENT_SECRET": "your-value",
        "GMAIL_MCP_DB": "your-value",
        "GMAIL_MCP_OAUTH_PORT": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add multi-account-gmail --env GMAIL_MCP_CLIENT_SECRET=your-value --env GMAIL_MCP_DB=your-value --env GMAIL_MCP_OAUTH_PORT=your-value -- uvx multi-account-gmail-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "multi-account-gmail": {
      "command": "uvx",
      "args": [
        "multi-account-gmail-mcp"
      ],
      "env": {
        "GMAIL_MCP_CLIENT_SECRET": "your-value",
        "GMAIL_MCP_DB": "your-value",
        "GMAIL_MCP_OAUTH_PORT": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "multi-account-gmail": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "multi-account-gmail-mcp"
      ],
      "env": {
        "GMAIL_MCP_CLIENT_SECRET": "your-value",
        "GMAIL_MCP_DB": "your-value",
        "GMAIL_MCP_OAUTH_PORT": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

GMAIL_MCP_CLIENT_SECRET env
Path to the Google OAuth "Desktop app" client-secret JSON. Defaults to ~/.gmail-mcp/client_secret.json.
GMAIL_MCP_DB env
Path to the SQLite token store holding per-account refresh tokens. Defaults to ~/.gmail-mcp/tokens.db.
GMAIL_MCP_OAUTH_PORT env
Localhost port for the OAuth redirect during account authorization. Defaults to 8765.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account cunicopia-dev, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Chat & emaili

More stars than 0% of the other 1768 servers in this category
Published to the registry more recently than 14% of the other 1768 servers in this category
Basic checks equal to or better than 100% of the other 1768 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Multi-Account Gmail safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.3.0) reached the registry 4 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Python (uv) on your computer.

What can I use instead?

In the same category: Vexa, emailmd, MCP WhatsApp Cloud

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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MCP WhatsApp Cloud

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Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

gmail-mcp

An [MCP](https://modelcontextprotocol.io) server that reads across _all_ your Gmail accounts from one connection.

Most Gmail integrations — including the native connectors — bind a single account per OAuth grant: connect a second inbox and you disconnect the first. gmail-mcp keeps any number of accounts authorized at once. One Google Cloud client authorizes them all, each lands as a row in a local SQLite file, and every tool takes an account argument that routes to the right mailbox. search_all_accounts sweeps all of them in a single query.

Python 3.12+ · MIT · stdio MCP server + auth CLI · local SQLite token store

It's built to be owned completely: runs in-process over stdio, stores tokens in one SQLite file you can inspect, copy, or delete, talks only to Google and your MCP client, and hardcodes no secrets.

It reads, searches, drafts, and labels. It doesn't send — create_draft leaves a draft for you to send yourself. That's a deliberate default (reasoning in Security model), not a hard stance; if you want autonomous send, it's a small addition or a different server.

The idea in 30 seconds
Design notes
Tools
Architecture
Identity & auth model
The OAuth model
The multi-account model
Token lifecycle
The headless auth path
Security model
Install
Quickstart
Configuration
Register with an MCP client
Development
Project layout
License

The idea in 30 seconds

Authorize N accounts once via the CLI. Then every tool takes an account, and search_all_accounts hits all of them at once:

search_all_accounts(query="invoice newer_than:30d")

── personal@gmail.com ─────────────────────────────── from: billing@acme.com subject: Invoice #4821 (id 18f...)

── work@company.com ───────────────────────────────── from: ap@vendor.io subject: March invoice (id 19a...)

One query, every inbox, each result tagged with its account and carrying the message id — so the agent can chain read_message(account, id) or create_draft(...) next.

Design notes

One OAuth client, many inboxes. A single Google Cloud project and one client_secret.json authorize every account. Adding the tenth inbox is the same one-command flow as the first.

Boring storage. Tokens live in one SQLite file under ~/.gmail-mcp/. No daemon, no keyring dependency, no cloud. Back it up by copying it; revoke an account by deleting a row; inspect it with any SQLite tool.

Least privilege. Four granular scopes — gmail.readonly, gmail.compose, gmail.modify, gmail.settings.basic — never the full-mailbox https://mail.google.com/. It can read, draft, label, and manage filters; it never sends mail, and filters it creates can't forward mail off-account.

Headless-friendly. The auth flow assumes the server may have no browser: it prints a consent URL, binds a fixed port, and you SSH-forward the redirect. Works fine on a desktop too.

Tools

Every tool except list_accounts and search_all_accounts takes an account (the email address). Unknown accounts return an error listing the authorized ones.

Tool	Arguments	Returns
`list_accounts`	—	Authorized accounts + last-used time. Discover valid `account` values.
`search_messages`	`account`, `query`, `max_results=20`	Message summaries (Gmail search syntax) with ids.
`read_message`	`account`, `message_id`, `format="full"`, `max_body_chars?`	Decoded headers, plaintext body (HTML stripped if needed), attachment metadata. Body capped by default; pass `max_body_chars=0` for the full body.
`read_thread`	`account`, `thread_id`, `max_body_chars?`	Every message in the thread, in order. Each body capped by default; `max_body_chars=0` for full.
`download_attachments`	`account`, `message_id`, `index?`	Save a message's attachments to disk and return absolute paths. Address them by the `#N` shown in `read_message`; omit `index` for all of them. Fixed download root, no destination argument. Dangerous file types and anything on a spam-labeled message are refused.
`search_all_accounts`	`query`, `max_results_per_account=10`	One search across every account, each result tagged by account.
`create_draft`	`account`, `body`, `to?`, `subject?`, `cc?`, `bcc?`, `html=false`, `reply_to_message_id?`, `reply_all=false`, `from_addr?`	A draft (not sent). Returns the draft id. With `reply_to_message_id` the draft is a reply inside that message's thread: recipient, subject, `In-Reply-To`, `References` and the thread id come from it, and `to`/`subject` become optional overrides. Without it, `to` and `subject` are required. `from_addr` sets the `From` header for a verified send-as alias; it defaults to the account address.
`list_drafts`	`account`, `max_results=20`	Draft ids in the account.
`list_labels`	`account`	The account's labels (name + id).
`create_label`	`account`, `name`	Create a user label (nest with `/`). Idempotent: an existing name (case-insensitive) returns its id and creates nothing.
`modify_labels`	`account`, selection (`message_id` \	`message_ids` \	`query`), `add?`, `remove?`	Add/remove labels on a selection (one id, a list, or everything a query matches), batched 1000/call. General mutator: archive = remove INBOX, mark-read = remove UNREAD, star = add STARRED.
`trash`	`account`, selection (`message_id` \	`message_ids` \	`query`)	Move a selection to Trash (recoverable 30 days; not permanent delete). Refuses an empty selection.
`bulk_action`	`account`, `action`, selection (`message_id` \	`message_ids` \	`query`)	Friendly verb layer over `modify_labels`. `action` ∈ `archive`/`unarchive`/`mark_read`/`mark_unread`/`star`/`unstar`/`spam`/`unspam`/`trash`/`untrash`. Batched 1000/call; refuses an empty selection.
`read_messages`	`account`, `message_ids` \	`query`, `max_results=25`	Batch-read full content of many messages in one call (vs. N `read_message` calls).
`count_messages`	`query`, `account?`, `all_accounts=false`	Count matches without fetching content — blast-radius check before a bulk action. `all_accounts` gives a per-account breakdown + total.
`list_filters`	`account`	The account's filters: id, criteria, actions (label ids shown as names).
`create_filter`	`account`, one of `from_address`/`to_address`/`subject`/`query`/`has_attachment`, plus an action (`archive`/`mark_read`/`delete`/`star` or `add_labels`/`remove_labels`)	A server-side rule applied to incoming mail. Can't forward off-account.
`delete_filter`	`account`, `filter_id`	Remove a filter by id (leaves already-acted-on mail alone).

Architecture

flowchart TD

subgraph client[Your machine] Agent[MCP client / agent] CLI[gmail-mcp-auth CLI] Server[gmail-mcp stdio server] Store[("SQLite ~/.gmail-mcp/tokens.db")] Secret["client_secret.json one OAuth client"] end Google[Google OAuth + Gmail API]

Authorization happens once per account through the CLI (it needs a browser). After that the stdio server reads tokens straight from SQLite, refreshing access tokens on demand and persisting them back. The rest of this section is the "why it works the way it does" detail.

Identity & auth model

How gmail-mcp authenticates to Gmail, juggles multiple accounts under a single OAuth client, refreshes tokens over time, and authorizes accounts on a headless server. If you just want to get running, jump to Quickstart.

The OAuth model

gmail-mcp authenticates using a Google "Desktop app" OAuth client (an *installed application* in OAuth 2.0 terms), driven by the InstalledAppFlow helper from google-auth-oauthlib.

Why an installed-app / desktop client. Installed apps run on a machine the end user controls, so OAuth treats them as public clients: the client_secret in the downloaded client_secret.json is *not* assumed to be confidential. That's the right trust model for a local CLI/desktop tool — there's no server-side component that could keep a secret truly secret, and security rests on the user controlling the redirect (the loopback address) rather than on secret confidentiality. It's the client type Google recommends for command-line and desktop tools.

The loopback redirect flow. After you approve consent in a browser, Google redirects the authorization code to http://localhost: /, where a tiny throwaway HTTP server (started by InstalledAppFlow.run_local_server) catches it. gmail-mcp pins this to a fixed port (default 8765, override with GMAIL_MCP_OAUTH_PORT) and runs with open_browser=False so it works on machines with no browser — see The headless auth path.

Scopes requested. Four granular scopes — never the full-mailbox https://mail.google.com/:

Scope	What it grants
`gmail.readonly`	Read mail and metadata: search messages/threads, read bodies, list labels and drafts. Read-only — cannot modify anything.
`gmail.compose`	Create, update, and manage drafts. Used only by `create_draft`.
`gmail.modify`	Add/remove labels on messages and create labels. Used by `modify_labels`, `bulk_action`, `trash` and `create_label`.
`gmail.settings.basic`	List, create, and delete filters. Used by `list_filters`/`create_filter`/`delete_filter`. Does not grant forwarding-address changes (that's `gmail.settings.sharing`, not requested).

gmail.send is not requested. Without it the credential simply has no Gmail API path to send mail — the drafts-only behavior is a property of the grant, not just an omitted tool. gmail.settings.sharing is likewise not requested, so no filter can forward mail to another address. The scope list lives in one place: SCOPES in src/gmail_mcp/config.py.

Adding the filter scope to an existing install: widening SCOPES does not

retro-grant already-authorized accounts. Each account must re-run

gmail-mcp-auth add to re-consent to the new scope; until it does, the filter

tools return a 403 insufficient scope error.

The multi-account model

One OAuth client authorizes many accounts. You create a single Google Cloud project and one "Desktop app" OAuth client, then run the consent flow once per Gmail account, signing into the account you want to add each time. A single client_secret.json can authorize any number of accounts.
Each account is a row in SQLite. Every authorized account is stored in the accounts table (~/.gmail-mcp/tokens.db, override with GMAIL_MCP_DB), keyed by email. The row holds the long-lived refresh token, the most recent access-token blob, the granted scopes, and timestamps.
**

Only the beginning is shown; read the rest in the repo

Multi-Account Gmail

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Chat & emaili

Common questions

Alternatives

Vexa

emailmd

MCP WhatsApp Cloud

README from the maker

gmail-mcp

Contents

The idea in 30 seconds

Design notes

Tools

Architecture

Identity & auth model

The OAuth model

The multi-account model