Mailbox MCP

Give your AI tools access to your email. Search, read, send, and manage messages across multiple accounts without leaving your terminal. Its 40 documented tools cover email, emails, draft, label. It runs locally over stdio via the published package.

People connecting email tools to Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-07-13 · ★ 6 · #41 OF 75 MAINTAINED EMAIL · VERIFIED 2026-08-25

MIT · TypeScript servers · how we verify → /methodology

01 · Install Mailbox MCP

before you install - you'll need

Set MAILBOX_MCP_PASSPHRASE, MAILBOX_MCP_TOOLS before connecting.

Claude Code

claude mcp add jgalea-mailbox-mcp -- npx -y mailbox-mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "jgalea-mailbox-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "mailbox-mcp"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

npm package mailbox-mcp - unscoped; check the name against the project README before installing

registry namespace io.github.jgalea is GitHub-verified and matches the repo owner

03 · What Mailbox MCP can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

With this server connected, an agent can list configured accounts, add a new account, remove an account, and search messages (optional folder to scope the search).

Capability map

Tools grouped from the project's README - what Mailbox MCP lets an agent do.

8 tools - e.g. Read a message; Send a new email (supports from, attachments); Reply to a message (supports from, attachments)

read_email · send_email · reply_email · forward_email · star_email · archive_email…

read & search

7 tools - e.g. List configured accounts; Read a conversation thread (Gmail + JMAP); List drafts for an account

list_accounts · read_thread · list_drafts · list_labels · list_recent_bulk_ops · list_filters…

Emails

4 tools - e.g. Search messages (optional folder to scope the search); Trash messages; Bulk modify labels

search_emails · trash_emails · batch_modify_emails · emails_since

Draft

4 tools - e.g. Create a draft (supports reply drafts via in_reply_to, plus from, attachments); Send an existing draft; Replace the contents of an existing draft (thread association preserved)

create_draft · send_draft · update_draft · delete_draft

Label

3 tools - e.g. Create a label/folder; Delete a label/folder; Show unread message counts per label/folder

create_label · delete_label · count_unread_by_label

auth & access

2 tools - e.g. Add a new account; Re-run OAuth for an existing Gmail account (use when refresh token expires with invalid_grant)

authenticate · reauth

Filter

2 tools - e.g. Create a filter; Delete a filter

create_filter · delete_filter

delete

1 tool - e.g. Remove an account

remove_account

Latest releases

v0.6.1 · 2026-04-20

Security · \multi_account_search\ now redacts tokens and strips absolute paths from per-account error messages before returning them to the MCP client. Previously a raw \Error.message\ could have surfaced a bearer or…

v0.6.0 · 2026-04-20

Added · mark_read - mark a message as read or unread. · star_email - star or unstar a message (Gmail STARRED, IMAP \\Flagged, JMAP \$flagged). · archive_email - archive a message (remove from inbox). · list_drafts /…

v0.5.1 · 2026-04-20

Changed · Release tarballs now ship with npm provenance attestations. Published via GitHub Actions OIDC (trusted publisher) - no long-lived npm token required. · Verify with: · \\\ · npm audit signatures mailbox-mcp…

04 · Who maintains Mailbox MCP

mailbox-mcp is maintained by jgalea. We track 2 MCP servers from jgalea - 2 actively maintained, 11 combined GitHub stars, oldest repo from Apr 2026. Full record: all servers from jgalea.

telegram-mcp Telegram MCP server: read, send, and search messages and manage chats via your account. ★ 5

05 · Facts

repository: github.com/jgalea/mailbox-mcp
category: email - ranked #41 of 75 actively-maintained email servers as of 2026-08-25.
registry: io.github.jgalea/mailbox-mcp (active, first published 2026-06-17)
packages: npm:mailbox-mcp

06 · Mailbox MCP FAQ

Is Mailbox MCP still maintained?

Yes - as of 2026-08-25, its last commit was 2026-07-13. We re-verify nightly.

What can Mailbox MCP do?

With this server connected, an agent can list configured accounts, add a new account, remove an account, and search messages (optional folder to scope the search).

How do I install Mailbox MCP?

Run `npx -y mailbox-mcp`. The README documents 2 environment variables (MAILBOX_MCP_PASSPHRASE, MAILBOX_MCP_TOOLS) to set first. Set MAILBOX_MCP_PASSPHRASE, MAILBOX_MCP_TOOLS before connecting. You can also paste the ready-made client config above.

Does Mailbox MCP run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Mailbox MCP

Alternatives to Mailbox MCP

Maintained email servers if Mailbox MCP isn't the fit.

More email MCP servers · Apple Mail · Che Apple Mail MCP · Mail Fathom · Outlook Assistant · Qorami

More TypeScript MCP servers · Codeseeker · Forge Craft · Brightspace · Veto · Secondhand MCP · see all