What do I need to connect this MCP?

You will need your Mail-in-a-Box Host address, your Admin Email, and either your Admin Password or an API Key.

Which AI clients can I use?

You can use any MCP-compatible client, such as Claude, Cursor, or Windsurf.

Can I manage multiple domains?

Yes, the MCP allows you to list and manage all mail domains and subdomains configured on your instance.

Vinkius hosts the MCP and manages the credentials, allowing you to connect your existing private infrastructure to your agent securely.

Can I check if my SMTP service is down?

Yes, you can use the system status capability to check the health of core services like SMTP and IMAP.

What format is required for the instance host?

Provide the full hostname without the 'https://' prefix, for example: box.yourdomain.com.

Can I add multiple forwarding targets to an alias?

Yes, when using the create_or_update_alias capability, provide a comma-separated list of emails in the forwards_to field.

Does this work with 2FA enabled accounts?

The current API implementation uses Basic Auth. If 2FA is enabled on your admin account, you may need to use an API key or a dedicated admin user without 2FA for the integration.

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Connect Mail-in-a-Box to ChatGPT, Claude and Gemini

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Run your private email infrastructure using natural language.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

Waiting for input…

Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 9 capabilities

We ship only the actions that matter.

Capability set01 / 03

01-03

3 capabilities in this set.

Part of 9 available through Mail-in-a-Box.

01
Create or update alias
This capability creates a new alias or modifies an existing one using a comma-separated list of destination emails.
02
List mail users
Use this to see every mail user currently active on the server.
03
List mail domains
This capability retrieves a list of all mail domains currently hosted on your server.

Capability set02 / 03

04-06

3 capabilities in this set.

Part of 9 available through Mail-in-a-Box.

04
Update user password
This capability changes the password for a specific mail user.
05
Get system status
This capability checks the current health and status of your Mail-in-a-Box system.
06
Create mail user
This capability adds a new mailbox by providing a full email address and password.

Capability set03 / 03

07-09

3 capabilities in this set.

Part of 9 available through Mail-in-a-Box.

07
List mail aliases
Use this to get a full list of all configured mail aliases and forwarders.
08
Delete mail alias
Use this to remove an existing mail alias.
09
Delete mail user
This capability removes a specific mail user from your instance.

Real work

What teams actually run

Rapid User Onboarding

Tell your agent to create a new mailbox for a new employee instantly.

Automated Alias Setup

Set up email forwarding for a department using a single command.

Health Monitoring

Ask your agent if the mail services are running correctly after a system update.

Credential Management

Update user passwords through your agent instead of logging into the admin panel.

Automate a task

Put Mail-in-a-Box to work on one thing.

Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.

One connector, every AI

Mail-in-a-Box works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

Building your own app? The connector is yours to use.

You don't need a client to put Mail-in-a-Box to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

867ms average. Fast in production.

Mail-in-a-Box is checked daily against the live service.

Daily averagePeak 1142ms

Oct 3Today

Fastest day: 708ms
Slowest day: 1142ms
14-day trend: Slowing+15%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 9 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of Mail-in-a-Box, so you can see the experience inside your AI.

It does not authenticate your account with Mail-in-a-Box. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

Mail-in-a-Box Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_97zoxuoeEjuuPbMDKKGoSZNXF3IIT7shhlTFbzSa/mcp

Claude Desktop

Follow the steps below to connect in seconds.

1In Claude Desktop, open Settings → Connectors.
2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
3Click Add and start a new chat — Mail-in-a-Box capabilities are ready to use.

Configuration · claude_desktop_config.jsonCopy

{
  "mcpServers": {
    "mail-in-a-box-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_97zoxuoeEjuuPbMDKKGoSZNXF3IIT7shhlTFbzSa/mcp"
    }
  }
}

Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up Mail-in-a-Box in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work Mail-in-a-Box owners hand off.

This MCP is built for people who run their own email infrastructure and want to manage it without constant manual configuration.

01
System Administrators
They use the agent to handle user onboarding and forwarding rules through text.
02
DevOps Engineers
They automate mailbox creation and system health checks within their existing dev capabilities.
03
Privacy-Conscious Teams
They manage private communication setups using an AI-integrated interface.

FAQ

Questions Mail-in-a-Box owners ask.

01
What do I need to connect this MCP?
You will need your Mail-in-a-Box Host address, your Admin Email, and either your Admin Password or an API Key.
02
Which AI clients can I use?
You can use any MCP-compatible client, such as Claude, Cursor, or Windsurf.
03
Can I manage multiple domains?
Yes, the MCP allows you to list and manage all mail domains and subdomains configured on your instance.
04
Is my data secure?
Vinkius hosts the MCP and manages the credentials, allowing you to connect your existing private infrastructure to your agent securely.
05
Can I check if my SMTP service is down?
Yes, you can use the system status capability to check the health of core services like SMTP and IMAP.
06
What format is required for the instance host?
Provide the full hostname without the 'https://' prefix, for example: box.yourdomain.com.
07
Can I add multiple forwarding targets to an alias?
Yes, when using the create_or_update_alias capability, provide a comma-separated list of emails in the forwards_to field.
08
Does this work with 2FA enabled accounts?
The current API implementation uses Basic Auth. If 2FA is enabled on your admin account, you may need to use an API key or a dedicated admin user without 2FA for the integration.

Explore

More in Communication Messaging

Connect Mail-in-a-Box to Claude, Cursor, ChatGPT & more

Your AI does the work. We keep it safe and sound.

Each Connector runs inside its own sealed environment.

One switch stops every agent. Instantly.

Spending limits that pause instead of surprise.

We ship only the actions that matter.

01-03

Create or update alias

List mail users

List mail domains

04-06

Update user password

Get system status

Create mail user

07-09

List mail aliases

Delete mail alias

Delete mail user

What teams actually run

Rapid User Onboarding

Automated Alias Setup

Health Monitoring

Credential Management

Building your own app? The connector is yours to use.

Mail-in-a-Box Connector

Claude Desktop

System Administrators

DevOps Engineers

Privacy-Conscious Teams

What do I need to connect this MCP?

Which AI clients can I use?

Can I manage multiple domains?

Is my data secure?

Can I check if my SMTP service is down?

What format is required for the instance host?

Can I add multiple forwarding targets to an alias?

Does this work with 2FA enabled accounts?

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