Bring Email Server
to Cursor
Create your Vinkius account to connect Mail-in-a-Box to Cursor and start using all 9 AI tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code. No hosting, no server setup — just connect and start using.
GDPR Free for SubscribersCompatible with every major AI agent and IDE
Gemini
What is the Mail-in-a-Box MCP Server?
Connect your Mail-in-a-Box instance to any AI agent to automate your private email server management. This MCP server enables your agent to manage mailboxes, configure forwarding aliases, and monitor system health and diagnostics directly from natural language interfaces.
What you can do
- User Administration — List all mail users, create new mailboxes, and update passwords programmatically
- Alias Management — Create, update, and remove email forwarding addresses and group aliases
- System Monitoring — Retrieve real-time health status, diagnostic checks, and configuration metadata for your server
- Domain Oversight — List all hosted mail domains and subdomains configured on your instance
- Access Control — Manage administrative privileges and account settings for your email users
How it works
- Subscribe to this server
- Enter your Mail-in-a-Box Host, Admin Email, and Admin Password (or API Key)
- Start managing your private email infrastructure from Claude, Cursor, or any MCP-compatible client
Who is this for?
- System Administrators — Manage mailboxes and forwarding rules via simple natural language commands
- DevOps Engineers — Automate user onboarding and system health monitoring directly from your dev tools
- Privacy-Conscious Teams — Maintain your private communication infrastructure effortlessly through an AI-integrated interface
Built-in capabilities (9)
Requires a full email address and a password. Add a new mail user (mailbox)
forwards_to should be a comma-separated list of emails. Add or update a mail alias
Remove a mail alias
Remove a mail user
Check the status of the Mail-in-a-Box system
List all mail aliases and forwarders
List all mail domains hosted on the server
List all mail users on the server
Change the password for a mail user
Why Cursor?
Cursor's Agent mode turns Mail-in-a-Box into an in-editor superpower. Ask Cursor to generate code using live data from Mail-in-a-Box and it fetches, processes, and writes. all in a single agentic loop. 9 tools appear alongside file editing and terminal access, creating a unified development environment grounded in real-time information.
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Agent mode turns Cursor into an autonomous coding assistant that can read files, run commands, and call MCP tools without switching context
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Cursor's Composer feature can generate entire files using real-time data fetched through MCP. no copy-pasting from external dashboards
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MCP tools appear alongside built-in tools like file reading and terminal access, creating a unified agentic environment
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VS Code extension compatibility means your existing workflow, keybindings, and extensions all work alongside MCP tools
Mail-in-a-Box in Cursor
Why run Mail-in-a-Box with Vinkius?
The Mail-in-a-Box connection runs on our fully managed, secure cloud infrastructure. We handle the hosting, maintenance, and security so you don't have to deal with servers or code. All 9 tools are ready to work instantly without any complex setup.
You stay in complete control of your data. Your AI only accesses the information you approve, keeping your sensitive passwords and private details completely safe. Plus, with automatic optimizations, your AI works faster and more efficiently.
* Every connection is hosted and maintained by Vinkius. We handle the security, updates, and infrastructure so you don't have to write code or manage servers. See our infrastructure
Over 4,000 integrations ready for AI agents
Explore a vast library of pre-built integrations, optimized and ready to deploy.
Connect securely in under 30 seconds
Generate tokens to authenticate and link external services in a single step.
Complete visibility into every agent action
Audit live requests, latency, success rates, and active security compliance policies.
Optimize spending and track token ROI
Analyze real-time token consumption and cost metrics detailed by connection.
Explore our live AI Agents Analytics dashboard to see it all working
This dashboard is included when you connect Mail-in-a-Box using Vinkius. You will never be left in the dark about what your AI agents are doing with your tools.
Mail-in-a-Box and 4,000+ other AI tools. No hosting, no code, ready to use.
Professionals who connect Mail-in-a-Box to Cursor through Vinkius don't need to write code, manage servers, or worry about security. Everything is pre-configured, secure, and runs automatically in the background.
Raw MCP | Vinkius | |
|---|---|---|
| Ready-to-use MCPs | Find and configure each manually | 4,000+ MCPs ready to use |
| Connection Setup | Manual coding & server setup | 1-click instant connection |
| Server Hosting | You host it yourself (needs 24/7 uptime) | 100% hosted & managed by Vinkius |
| Security & Privacy | Stored in plaintext config files | Bank-grade encrypted vault |
| Activity Visibility | Blind execution (no logs or tracking) | Live dashboard with real-time logs |
| Cost Control | Runaway AI token spend risk | Automatic budget limits |
| Revoking Access | Must delete files or code to stop | 1-click disconnect button |
How Vinkius secures
Mail-in-a-Box for Cursor
Every request between Cursor and Mail-in-a-Box is protected by our secure gateway. We automatically keep your sensitive data private, prevent unauthorized access, and let you disconnect instantly at any time.
Frequently asked questions
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 tool, 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.
What is Agent mode and why does it matter for MCP?
Agent mode is Cursor's autonomous execution mode where the AI can perform multi-step tasks: reading files, editing code, running terminal commands, and calling MCP tools. Without Agent mode, Cursor operates in a simpler ask-and-answer mode that doesn't support tool calling. Always ensure you're in Agent mode when working with MCP servers.
Where does Cursor store MCP configuration?
Cursor looks for MCP server configurations in a mcp.json file. You can configure servers at the project level (.cursor/mcp.json in your project root) or globally (~/.cursor/mcp.json). Project-level configs take precedence.
Can Cursor use MCP tools in inline edits?
No. MCP tools are only available in Agent mode through the chat panel. Inline completions and Tab suggestions do not trigger MCP tool calls. This is by design. tool calls require user visibility and approval.
How do I verify MCP tools are loaded?
Open Settings → Features → MCP and look for your server name. A green indicator means the server is connected. You can also check Agent mode's available tools by clicking the tools dropdown in the chat panel.
Tools not appearing in Cursor
Ensure you are in Agent mode (not Ask mode). MCP tools only work in Agent mode.
Server shows as disconnected
Check Settings → Features → MCP and verify the server status. Try clicking the refresh button.
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