How to Use the Mailosaur MCP in Claude

Q: How do I use Mailosaur in Claude Desktop?

Add the server configuration to your claudedesktopconfig.json file. Once you restart the app, the tools appear in your chat interface under the hammer icon.

Q: Can I search for messages using Mailosaur in Claude Desktop?

Absolutely. Use searchservermessages with parameters like sender or subject. It returns matching records directly in your conversation history.

Test email and SMS flows directly inside Claude Desktop. Automate verification without switching context.

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Connect Mailosaur MCP to Claude Desktop

Create your Vinkius account to connect Mailosaur 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 Mailosaur with Claude Desktop

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Manage virtual servers in Claude Desktop

Use `create_virtual_server` to spin up isolated test environments on the fly. You get a clean inbox for every test run, keeping your data segregated. `list_virtual_servers` lets you view all active test environments. It keeps your workspace organized when you're juggling multiple staging pipelines.

Read and verify messages

Call `get_message_content` to pull full email or SMS bodies into your chat. You can check password reset links or verification codes instantly. `list_server_messages` shows you exactly what hit the inbox. It removes the guesswork when you're debugging delivery failures.

Clean up test data

Use `delete_specific_message` to remove individual emails after you've verified them. It keeps your test inbox tidy during long sessions. `clear_server_inbox` wipes everything at once. This is the fastest way to reset your state before a new test suite starts.

Setup guide

Set up Mailosaur 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 Mailosaur 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 Mailosaur 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 mailosaur-mcp.

json

{
  "mcpServers": {
    "mailosaur-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 Mailosaur. 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 Mailosaur MCP in Claude Desktop

Add the server configuration to your `claude_desktop_config.json` file. Once you restart the app, the tools appear in your chat interface under the hammer icon.

Yes. The server handles both email and SMS traffic through the same toolset. You can use the same search functions to verify incoming text messages.

Absolutely. Use `search_server_messages` with parameters like sender or subject. It returns matching records directly in your conversation history.

Your Mailosaur data stays within the encrypted API connection. The server only interacts with the specific inbox you authorize via your API key.

This server processes transactional email and SMS content. It keeps sensitive verification codes and message payloads contained within your local session.

Use it with your favorite AI tools

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