Assistant Mail MCP

Name: Assistant Mail MCP
Author: AssistantMail

by AssistantMailversion 1.3.1i★ 0iRuns on your computer

Registry nameio.github.AssistantMail/assistantmail-mcp

How to install

What it does

Agent email with allowlist and consent via AssistantMail.

Connects Runs on your computer
Account or key Needs ASSISTANT_MAIL_API_KEY
Category Chat & email

Install

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

Passed 3/3 checks · Runs on your computer · ✓ Commands checked Nov 13, 2026

First: which AI do you use?

ClaudeWeb · app · phoneChatGPTWebClaude CodeTerminalCursorCode editorVS CodeCode editorOtherOther apps

Pick your app and the steps appear below.

Works with Claude, with some setup first

You need a Assistant Mail MCP key (create it on the maker’s site) · Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Sign up and create a Assistant Mail MCP key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
Open the Assistant Mail MCP site ↗
Done
Open the Claude desktop app’s settings file
SettingsDeveloperEdit Config
Done

Paste these settings and save the file

{
  "mcpServers": {
    "assistantmail": {
      "command": "npx",
      "args": [
        "-y",
        "@assistantmail/assistantmail-mcp"
      ],
      "env": {
        "ASSISTANT_MAIL_API_KEY": "your-value",
        "ASSISTANT_MAIL_API_BASE_URL": "your-value"
      }
    }
  }
}

Paste the key only into the app’s field, never into a chat or to anyone

Done

Quit Claude and open it again
Done
Try it
Use Assistant Mail MCP and tell me what you can do for me, then show me one thing
✓ If Claude says it is using Assistant Mail MCP or shows a Assistant Mail MCP tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

ChatGPT cannot connect Assistant Mail MCP yet

Assistant Mail MCP runs on your computer, but ChatGPT can only connect servers that run on the web

What you can do instead

A · Use an app that can connect Assistant Mail MCP

Steps for Claude →You need a Assistant Mail MCP key (create it on the maker’s site) · Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
Steps for Claude Code →You need a Assistant Mail MCP key (create it on the maker’s site) · Install Node.js on your computer first (one time)
Steps for Cursor →You need a Assistant Mail MCP key (create it on the maker’s site) · Install Node.js on your computer first (one time)
Steps for VS Code →You need a Assistant Mail MCP key (create it on the maker’s site) · Install Node.js on your computer first (one time)

B · Others in Chat & email that work with ChatGPT

Picked from the most used in the same category, only ones that connect by address with no key

Inbox Zero✓ ChatGPT
draw.io✓ ChatGPT
TradingMCP✓ ChatGPT

Works with Claude Code, with some setup first

You need a Assistant Mail MCP key (create it on the maker’s site) · Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Sign up and create a Assistant Mail MCP key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
Open the Assistant Mail MCP site ↗
Done
Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Done
4
Paste this command and press Enter
```
claude mcp add --scope user assistantmail --env ASSISTANT_MAIL_API_KEY=your-value --env ASSISTANT_MAIL_API_BASE_URL=your-value -- npx -y @assistantmail/assistantmail-mcp
```
Replace “your-value” with your key before pressing Enter
Paste the key only into the app’s field, never into a chat or to anyone
Done
Type /mcp in Claude Code
You should see Assistant Mail MCP listed as connected
Done
Try it
Use Assistant Mail MCP and tell me what you can do for me, then show me one thing
✓ If Claude Code says it is using Assistant Mail MCP or shows a Assistant Mail MCP tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor, with some setup first

You need a Assistant Mail MCP key (create it on the maker’s site) · Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Sign up and create a Assistant Mail MCP key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
Open the Assistant Mail MCP site ↗
Done
Click this button to open Cursor
Open in Cursor
Cursor asks you to confirm; click Install
Done
Fill in your key
In the Assistant Mail MCP settings, ASSISTANT_MAIL_API_KEY, ASSISTANT_MAIL_API_BASE_URL is empty; add your key and save
Paste the key only into the app’s field, never into a chat or to anyone
Done
Open the AI chat in Cursor in Agent mode
Done
Try it
Use Assistant Mail MCP and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using Assistant Mail MCP or shows a Assistant Mail MCP tool in the answer, you are connected

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code, with some setup first

You need a Assistant Mail MCP key (create it on the maker’s site) · Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Sign up and create a Assistant Mail MCP key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
Open the Assistant Mail MCP site ↗
Done
Click this button to open VS Code
Open in VS Code
VS Code asks you to confirm; click Install
Done
Fill in your key
In the Assistant Mail MCP settings, ASSISTANT_MAIL_API_KEY, ASSISTANT_MAIL_API_BASE_URL is empty; add your key and save
Paste the key only into the app’s field, never into a chat or to anyone
Done
Open the AI chat in VS Code in Agent mode
Done
Try it
Use Assistant Mail MCP and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using Assistant Mail MCP or shows a Assistant Mail MCP tool in the answer, you are connected

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

JSON settings are under “For developers” below

Stuck? Ask people who use Assistant Mail MCP💬 Discussion →

For developers: Terminal commands and JSON settings

Installed on your computer

Claude Code

claude mcp add --scope user assistantmail --env ASSISTANT_MAIL_API_KEY=your-value --env ASSISTANT_MAIL_API_BASE_URL=your-value -- npx -y @assistantmail/assistantmail-mcp

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "assistantmail": {
      "command": "npx",
      "args": [
        "-y",
        "@assistantmail/assistantmail-mcp"
      ],
      "env": {
        "ASSISTANT_MAIL_API_KEY": "your-value",
        "ASSISTANT_MAIL_API_BASE_URL": "your-value"
      }
    }
  }
}

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "assistantmail": {
      "command": "npx",
      "args": [
        "-y",
        "@assistantmail/assistantmail-mcp"
      ],
      "env": {
        "ASSISTANT_MAIL_API_KEY": "your-value",
        "ASSISTANT_MAIL_API_BASE_URL": "your-value"
      }
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "assistantmail": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@assistantmail/assistantmail-mcp"
      ],
      "env": {
        "ASSISTANT_MAIL_API_KEY": "your-value",
        "ASSISTANT_MAIL_API_BASE_URL": "your-value"
      }
    }
  }
}

Values you fill in

ASSISTANT_MAIL_API_KEY secret required env
AssistantMail API key (amk_...). Required unless passed per-tool.
ASSISTANT_MAIL_API_BASE_URL env
Optional AssistantMail API base URL.

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

At a glance

GitHub stars i: 0
Downloads per weeki: 40/wk
Licence i: MIT
Connection: Runs on your computer
Transport: stdio
Latest versioni: 1.3.1
Categoryi: Chat & email
Published to registryi: Sep 3, 2026
Code last changedi: Sep 10, 2026
Maker: AssistantMail
Packages: npm: @assistantmail/assistantmail-mcp
Repo: AssistantMail/assistantmail-mcp
Website: assistant-mail.ai
Registry status: Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Run on your computer in

Claude Goose LM Studio Msty Studio Cherry Studio Cursor VS Code + GitHub Copilot Visual Studio Windsurf (Devin Desktop)Zed Kiro Cline Continue JetBrains AI Assistant Claude Code Codex CLI Gemini CLI OpenCode nodecode Warp LibreChat Raycast

All apps, with pros and cons →

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 13, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account AssistantMail, which owns the repo
✓ Pass
Still maintained
Code last changed 2 months ago
✓ Pass
Has a licence
Uses MIT
– 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

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

User reviews

No reviews yet

Compared with others in Chat & emaili

More stars than 0% of the other 2018 servers in this category
Published to the registry more recently than 25% of the other 2018 servers in this category
Basic checks equal to or better than 100% of the other 2018 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 Assistant Mail MCP safe?

It passed 3 of 3 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?

You need to fill in: ASSISTANT_MAIL_API_KEY

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 2 months ago, and the latest version (1.3.1) reached the registry 2 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: Inbox Zero, draw.io, TradingMCP

Others in the same category

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

Inbox Zero

Search Gmail and Outlook, save drafts, manage email rules, and view email stats.

by elie222Widely used★ 13KUpdated 43 days ago

Runs in the cloud

How to connect

draw.io

Create draw.io diagrams in chat from Mermaid or XML, shown live and interactive. 10,000+ shapes.

by jgraphWidely used★ 5.8KUpdated 3 days ago

Runs in the cloud✓ service owner · draw.io

How to connect

TradingMCP

Market analysis for AI assistants: screeners, multi-timeframe analysis, backtests, in-chat charts.

by atilaahmettanerWidely used★ 5.3KUpdated 22 days ago

Runs in the cloud

How to connect

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.

assistantmail-mcp

MCP server for AssistantMail — give AI agents a managed mailbox to send and receive email.

Built for personal and small-team OpenClaw / Hermes operators who want agent email with allowlist, consent, retention, and spend caps you control. Listed on ClawHub for easy install — not an official OpenClaw endorsement.

Get Free · Docs · Website · Privacy · Terms · Contributing

OpenClaw / ClawHub

openclaw skills install @assistantmail/assistant-mail

Then configure your MCP client to run this server and set ASSISTANT_MAIL_API_KEY (Claude Desktop and Cursor examples below). Skill: assistant-mail on ClawHub. Same MCP works with Hermes.

Installation

npx -y @assistantmail/assistantmail-mcp

Node 24+.

Claude Desktop

"mcpServers": { "assistantmail": { "command": "npx", "args": ["-y", "@assistantmail/assistantmail-mcp"], "env": { "ASSISTANT_MAIL_API_KEY": "amk_..." } } } }

Cursor / VS Code (`.cursor/mcp.json` or `.vscode/mcp.json`)

"servers": { "assistantmail": { "command": "npx", "args": ["-y", "@assistantmail/assistantmail-mcp"], "env": { "ASSISTANT_MAIL_API_KEY": "amk_..." } } } }

Prerequisites

Create a free account via the Get Free link above (1 agent, 25/day; current limits: Docs).
Go to API Keys and create a key (amk_...). Copy it immediately — it is only shown once.
Set ASSISTANT_MAIL_API_KEY; call assistantmail_list_mailboxes to get your mailboxId UUID. Mail API routes use that UUID, not an email address.

Paid plans: upgrade in-app only (not Payment Links). Use Upgrade in the AssistantMail app — checkout is not sold via Stripe Payment Links. Docs: assistant-mail.ai/docs

Official MCP Registry

The listing is live as io.github.AssistantMail/assistantmail-mcp on the Official MCP Registry. Product docs: assistant-mail.ai/docs.

Packaging lives in server.json. After a version bump, republish with mcp-publisher — see docs/MCP_REGISTRY.md.

Environment variables

Variable	Default	Description
`ASSISTANT_MAIL_API_KEY`	_(none)_	API key (`amk_...`). Can be omitted if passed per-tool.
`ASSISTANT_MAIL_API_BASE_URL`	`https://api.assistant-mail.ai`	The public API for the AssistantMail service

Tools

Diagnostics

Tool	Description
`assistantmail_health`	Check that the MCP server is running and confirm the API base URL. No API key required.

Account

Tool	Description
`assistantmail_get_me`	Get account profile and plan tier.
`assistantmail_get_inbound_policy`	Get the current inbound email policy (who can send to this account's mailboxes).
`assistantmail_update_inbound_policy`	Update the inbound policy (if allowed by selected account tier). Accepted values: `owner`, `list`, `sent`. Use `allowedSenders` with `list`.

Mailboxes

Tool	Description
`assistantmail_list_mailboxes`	List all mailboxes on the account. Returns `mailboxId` needed for message operations.
`assistantmail_create_mailbox`	Create a new mailbox (if allowed by selected account tier), optionally specifying `displayName` and `address`.
`assistantmail_get_mailbox`	Get metadata for a single mailbox by `mailboxId`.
`assistantmail_update_mailbox`	Update a mailbox's display name.
`assistantmail_delete_mailbox`	Permanently delete a mailbox and all its messages. THIS ACTION HAS NO CONFIRMATION. USE CAREFULLY.

Messages

Tool	Description
`assistantmail_list_messages`	List inbound and outbound messages for a mailbox. Supports `since` (ISO timestamp) and `limit` (max 100).
`assistantmail_get_message`	Fetch a single message including `textBody` and `htmlBody`. Bodies are only returned within the plan's retention window; `bodyExpired: true` is set if the window has elapsed.
`assistantmail_send_email`	Queue an outbound email. Requires `to`, `subject`, and at least one of `text` or `html`.
`assistantmail_reply_message`	Reply to an existing message. Requires `messageId` and at least one of `text` or `html`; recipients and subject are derived automatically.
`assistantmail_delete_messages`	Delete messages by `messageIds` array, or pass `deleteAll: true` to clear the mailbox.
`assistantmail_get_usage`	Get daily and monthly send quota usage for a mailbox. A `null` limit means unlimited.

Recipients

Tool	Description
`assistantmail_list_recipients`	List approved and pending recipients for the account.
`assistantmail_add_recipient`	Add a recipient. Sends a consent invitation email when required by the account's plan.
`assistantmail_remove_recipient`	Remove a recipient from the allowed list.

Reference tools

These return raw REST endpoint details rather than calling the API. Use them when you need to construct a request manually or inspect the exact URL and response schema.

Tool	Description
`assistantmail_send_email_reference`	Endpoint, headers, and body fields for `POST /v1/mailboxes/{mailboxId}/messages`.
`assistantmail_list_messages_reference`	Endpoint and query params for `GET /v1/mailboxes/{mailboxId}/messages`.
`assistantmail_get_message_reference`	Endpoint and response schema for `GET /v1/mailboxes/{mailboxId}/messages/{messageId}`.
`assistantmail_get_usage_reference`	Endpoint and response schema for `GET /v1/mailboxes/{mailboxId}/usage`.

Quick start

API_KEY="amk_..."

BASE="https://api.assistant-mail.ai"

1) Discover your mailboxId

curl "$BASE/v1/mailboxes" -H "x-api-key: $API_KEY"

2) Send an email

curl -X POST "$BASE/v1/mailboxes/ /messages" \ -H "x-api-key: $API_KEY" \ -H "Content-Type: application/json" \ -d '{"to":"recipient@example.com","subject":"Hello","text":"Hi there"}'

3) Read inbox

curl "$BASE/v1/mailboxes/ /messages" -H "x-api-key: $API_KEY"

Tool call examples

{ "tool": "assistantmail_list_mailboxes", "input": { "apiKey": "amk_..." } }

"tool": "assistantmail_list_messages", "input": { "mailboxId": " ", "limit": 20, "since": "2026-01-01T00:00:00.000Z" } }

"tool": "assistantmail_get_message", "input": { "mailboxId": " ", "messageId": " " } }

"tool": "assistantmail_send_email", "input": { "mailboxId": " ", "to": "recipient@example.com", "subject": "Hello", "text": "Hi there" } }

"tool": "assistantmail_reply_message", "input": { "mailboxId": " ", "messageId": " ", "text": "Thanks for the update." } }

If ASSISTANT_MAIL_API_KEY is set in the server environment, apiKey can be omitted from all tool inputs.

AssistantMail · Privacy Policy · Terms of Use

Assistant Mail MCP

What it does

Install

Install Node.js

Sign up and create a Assistant Mail MCP key

Open the Claude desktop app’s settings file

Paste these settings and save the file

Quit Claude and open it again

Try it

What you can do instead

Install Node.js

Sign up and create a Assistant Mail MCP key

Open Terminal

Paste this command and press Enter

Type /mcp in Claude Code

Try it

Install Node.js

Sign up and create a Assistant Mail MCP key

Click this button to open Cursor

Fill in your key

Open the AI chat in Cursor in Agent mode

Try it

Install Node.js

Sign up and create a Assistant Mail MCP key

Click this button to open VS Code

Fill in your key

Open the AI chat in VS Code in Agent mode

Try it

Installed on your computer

Values you fill in

At a glance

Which apps can use it

Related guides

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

Discussion

User reviews

Compared with others in Chat & emaili

Common questions

Others in the same category

Inbox Zero

draw.io

TradingMCP

README from the maker

assistantmail-mcp

OpenClaw / ClawHub

Installation

Claude Desktop

Cursor / VS Code (.cursor/mcp.json or .vscode/mcp.json)

Prerequisites

Official MCP Registry

Environment variables

Tools

Diagnostics

Account

Mailboxes

Messages

Recipients

Reference tools

Quick start

1) Discover your mailboxId

2) Send an email

3) Read inbox

Tool call examples

Cursor / VS Code (`.cursor/mcp.json` or `.vscode/mcp.json`)