How to Use the AgentMail MCP in Claude

Q: How do I set up AgentMail with Claude Desktop?

You have two options. For local control, edit your claudedesktopconfig.json file to add the AgentMail MCP server. For a zero-install setup on claude.ai, just paste the Vinkius MCP server URL into the Custom Connectors section in your settings.

Q: Can I use my own domain with AgentMail and Claude Desktop?

Yes. When you tell Claude to use the createinbox tool, you have the option to link it to a custom domain you own. This lets your agent send and receive emails from an address like agent@yourcompany.com.

Q: How does Claude Desktop handle attachments from AgentMail?

Claude can fetch attachments for you using the getattachment tool. It will download the file, and since you're using the Desktop app, you can have it save the file directly to your local machine for easy access.

Q: What's the best way to manage multiple inboxes with AgentMail in Claude?

Start by asking Claude to listinboxes. This gives you the ID for each one. From there, you can direct Claude to perform actions like listthreads or sendmessage on a specific inbox by referencing its ID.

Give Claude Desktop its own email address to manage your inbox right from the chat.

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Connect AgentMail MCP to Claude Desktop

Create your Vinkius account to connect AgentMail to Claude Desktop and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup AgentMail with Claude Desktop

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Create & Manage Inboxes

Your agent can now spin up dedicated email inboxes using `create_inbox`. You can even hook them up to your own domains. This isn't just a forwarding service; it's a real inbox your agent controls through the MCP Server. Claude can then list all available inboxes with `list_inboxes` to get the IDs it needs. When you're done with a project, just tell it to `delete_inbox` and everything inside is gone for good.

Read and Organize Mail with Claude Desktop

Let Claude read incoming mail directly in your chat. It can `list_threads` in any inbox to see what's new, then pull the full conversation with `get_thread`. It can even grab attachments using `get_attachment` for you to review. This means Claude can summarize long email chains, find specific information, and prepare drafts without you ever leaving the app. You can also tell it to `update_message` to mark things as read, keeping your agent's workspace tidy.

Send and Reply to Emails

Your agent can send new emails from scratch with `send_message`. Just tell Claude what to write and which inbox to send from. It's perfect for automated reports or follow-ups. Replying is just as easy. Your agent uses `reply_to_message` to keep the conversation in the same thread. It can also `forward_message` to another address, adding its own notes to the body.

Setup guide

Set up AgentMail MCP in Claude Web or Desktop

1

Open Claude Settings

Go to claude.ai, click your profile icon, then navigate to Customize → Connectors.
2

Add Custom Connector

Click the "+" button and select Add custom connector. Paste your Vinkius endpoint URL: https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. For OAuth-protected servers, expand Advanced settings to add credentials.
3

Start a conversation

Open a new chat. The AgentMail MCP tools are available immediately — no restart needed.

Endpoint URL

https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

No configuration file needed — paste the URL directly in the Claude web interface.

Available on Free (1 connector), Pro, Max, Team, and Enterprise plans.

Prerequisites

Claude Desktop installed (macOS or Windows)
Active Vinkius subscription with a valid endpoint token

1

Open Claude Desktop Settings

Click the menu icon at the top-left corner, go to Settings → Developer → Edit Config. This opens claude_desktop_config.json in your default text editor.
2

Paste the AgentMail MCP configuration

Copy the JSON snippet on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Restart Claude Desktop

Close and reopen the application. Claude needs a full restart to load new MCPs — refreshing a conversation is not enough.
4

Verify the connection

Open a new conversation. Click the 🔌 icon at the bottom of the message input. You should see tools listed under agentmail-mcp.

json

{
  "mcpServers": {
    "agentmail-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by AgentMail. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about AgentMail MCP in Claude Desktop

You have two options. For local control, edit your `claude_desktop_config.json` file to add the AgentMail MCP server. For a zero-install setup on claude.ai, just paste the Vinkius MCP server URL into the Custom Connectors section in your settings.

Yes. When you tell Claude to use the `create_inbox` tool, you have the option to link it to a custom domain you own. This lets your agent send and receive emails from an address like `agent@yourcompany.com`.

Claude can fetch attachments for you using the `get_attachment` tool. It will download the file, and since you're using the Desktop app, you can have it save the file directly to your local machine for easy access.

Start by asking Claude to `list_inboxes`. This gives you the ID for each one. From there, you can direct Claude to perform actions like `list_threads` or `send_message` on a specific inbox by referencing its ID.

Your email messages and attachments are only processed for the task at hand. Vinkius runs this MCP server in an ephemeral sandbox, meaning the data isn't stored after your agent's request is complete. All communication between Claude and the server is encrypted end-to-end.

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