Fluxmail

Read, search, draft, send, and organize email through Gmail, Outlook, and IMAP/SMTP mailboxes.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "fluxmail-2": {
      "command": "npx",
      "args": [
        "-y",
        "fluxmail-2"
      ]
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Documentation Overview

Fluxmail is self-hosted email infrastructure for agents and apps. It connects to Gmail, Microsoft 365, Outlook.com, and IMAP/SMTP mailboxes. Agents use MCP, apps and backend workflows use the versioned REST API, and operators use the CLI to connect mailboxes, manage access, and run the service.

Features

📬 Connect Gmail, Google Workspace, Microsoft 365, Outlook.com, and IMAP/SMTP mailboxes to one instance.
🤖 Give agents MCP tools to list, search, read, draft, reply, forward, send, schedule, and organize email.
🔌 Use the same mailbox operations from the versioned REST API and CLI.
🧵 Fetch complete messages and threads, work across several mailboxes, and download attachments.
🗂️ Mark mail as read, star or archive it, move it between folders, send it to Trash, and manage Gmail labels or Outlook categories.
🔐 Limit each client to selected mailboxes and actions with permission profiles or custom policies.
👥 Add members and share selected mailboxes on Team and Enterprise plans.
🏠 Run Fluxmail locally or in Docker while keeping its database and encrypted provider credentials on your infrastructure.

Get started

Fluxmail requires Node.js 20.20.x, or Node.js 22.22 or later.

Terminal

npm install -g fluxmail
fluxmail setup --name "Your name" --email you@example.com

Then follow the quickstart to connect a mailbox and choose how you want to use Fluxmail: MCP, REST API, or CLI.

Documentation

Plans and license

The Personal plan supports three mailboxes and one member. Paid plans raise those limits for teams that share an instance. See Fluxmail pricing for current details.

Fluxmail is source available under the Elastic License 2.0. You may use, modify, create derivative works, and redistribute Fluxmail subject to that license. Running a fork does not by itself require a paid Fluxmail subscription, and the built-in Personal plan supports three mailboxes and one member without a paid key.

Official Pro and Team entitlements require a valid Fluxmail license key. ELv2 does not allow you to change or circumvent license key functionality, remove protected functionality, or provide Fluxmail itself as a hosted or managed service that exposes a substantial set of its features. Use of the Fluxmail name and logos is also subject to the Fluxmail Terms of Service.

Read the full README →View source on GitHub →

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Frequently Asked Questions about Fluxmail

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "fluxmail": { "command": "npx", "args": ["-y", "Fluxmail"] } }

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Technical Specs & Signals

CategoryCommunication

27Quality signal: Emerging · 27/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership8/20

Documentation & tools11/30

Adoption & activity1/15

Community engagement0/10

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More in 💬 Communication →Best MCP servers for Slack & Communication →Alternatives to Fluxmail →Install in Claude Desktop Install in Cursor Install in VS Code