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PopNx MCPMCP servers for people who use AI · explained in plain words

Mail.app

by p-l-taversion 1.3.5i★ –iRuns on your computer
Registry nameio.github.p-l-ta/mail-mcp

Install

Overview

Description from the maker (original English)

Search, read, send, and manage email via macOS Mail.app across all configured accounts.

PopNx MCP’s three pillars

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

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).
  • The registry lists no key to fill in.

You need

  • npmNode.js installed (for the npx command)

Which app do you use?

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": {
    "mail": {
      "command": "npx",
      "args": [
        "-y",
        "@p-l-ta/mail-mcp"
      ]
    }
  }
}

Run this in your terminal

claude mcp add mail -- npx -y @p-l-ta/mail-mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "mail": {
      "command": "npx",
      "args": [
        "-y",
        "@p-l-ta/mail-mcp"
      ]
    }
  }
}

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": {
    "mail": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@p-l-ta/mail-mcp"
      ]
    }
  }
}

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.

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 8, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account p-l-ta, 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 1860 servers in this category
  • Published to the registry more recently than 16% of the other 1860 servers in this category
  • Basic checks equal to or better than 100% of the other 1860 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 Mail.app 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 (1.3.5) 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 Node.js on your computer.

What can I use instead?

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

Alternatives

Servers in the same category from other makers, sorted by stars.

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

Vexa

Meeting bot and transcripts for Google Meet, Teams and Zoom. Live or after, speakers labelled.

by Vexa-aiWidely used★ 2.9KUpdated 2 months ago

Runs in the cloud✓ vexa.ai

emailmd

Render markdown into email-safe HTML, lint drafts for deliverability problems, and preview emails.

by anypostWidely used↓ 5.3K/wk★ 1.4KUpdated 33 days ago

Computer or cloud✓ emailmd.dev

MCP WhatsApp Cloud

MCP server for WhatsApp Cloud API (Meta) — messages, media, and templates via Graph API

by codesparEarly↓ 63/wk★ 277Updated 5 months ago

Runs on your computer

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.

mail-mcp

MCP server that gives Claude (and other MCP hosts) full access to Mail.app on macOS — search, read, send, reply, flag, move, and more — across every account configured in Mail.app (iCloud, Exchange, IMAP, etc.).

Prerequisites

  • macOS (Mail.app required)
  • Node.js 20+
  • An MCP host: Claude Desktop, Amazon Quick, or any stdio MCP client

Installation

Claude Desktop — one-click install (recommended)
  1. Download mail-mcp.mcpb from the latest release
  2. Double-click the .mcpb file — Claude Desktop installs it automatically
  3. Grant the required macOS permissions (see below)
Manual / Amazon Quick / other hosts
npx @p-l-ta/mail-mcp

Or install globally:

npm install -g @p-l-ta/mail-mcp

mail-mcp

Point your MCP host at the mail-mcp binary (stdio transport). Example config:

{

"mcpServers": { "mail-app": { "command": "npx", "args": ["@p-l-ta/mail-mcp"] } } }

Required macOS permissions

Grant these to the application that runs the MCP host (Claude Desktop, Amazon Quick, etc.):

PermissionWhere to grant
Full Disk AccessSystem Settings → Privacy & Security → Full Disk Access
Automation → MailSystem Settings → Privacy & Security → Automation

The MCP server process inherits permissions from the host application that launches it.

Tools

ToolDescription
search_emailsSearch messages via the Envelope Index database with rich filters
read_emailRead the full body of a message by its RFC message-id
list_accounts_and_mailboxesList all configured accounts and mailboxes with unread counts
list_recentList recent messages in a specific mailbox
list_sendersGrouped summary of senders with message and unread counts
send_emailSend a new email from one of the configured accounts
reply_to_emailReply to an existing message by RFC message-id
set_message_flagsSet read and/or flagged status on a message
move_emailMove a message to a different mailbox
trash_emailMove a message to Deleted Messages
create_mailboxCreate a new mailbox/folder in an account
bulk_mark_readMark all messages in a mailbox and/or from a sender as read
get_unsubscribe_linkExtract unsubscribe URLs from a message's headers and body
empty_mailboxDelete every message in a mailbox at once (Junk, Trash, etc.)

How it works

  • Search & read — queries Mail's own Envelope Index SQLite database directly for fast, structured results across all accounts
  • Actions (send, reply, flag, move, trash) — driven by AppleScript automation against Mail.app, so they work even for accounts where messages aren't stored as local files

Development

npm install

npm run dev # tsx watch — live reload npm test # vitest unit tests npm run build # compile TypeScript → dist/ npm run mcpb # build Claude Desktop extension → build/mail-mcp.mcpb

Interactive MCP testing:

npm run build

npx @modelcontextprotocol/inspector node dist/server.js

Privacy Policy

mail-mcp is a local MCP server that runs entirely on your Mac. It has no backend, no telemetry, and makes no network requests of its own.

What it accesses:

  • Mail.app's Envelope Index database (~/Library/Mail/) — read-only, used for search queries
  • Mail.app via AppleScript — to read message bodies, send mail, flag, move, and trash messages

What it does NOT do:

  • Collect, store, or transmit any data outside your Mac
  • Connect to any external server or API
  • Log message content anywhere

All email data stays on your device and is only passed to the MCP host (Claude Desktop or another client) as part of normal tool responses. You control exactly which tools Claude can invoke.

License

MIT

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