How to Use the Mailosaur MCP in VS Code Copilot

Q: How do I share Mailosaur settings in VS Code Copilot?

Add the server to your project's .vscode/mcp.json file. When you push this to Git, the entire team gets access to the same testing tools.

Standardize email testing across your team with Mailosaur and VS Code Copilot.

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Connect Mailosaur MCP to VS Code Copilot

Create your Vinkius account to connect Mailosaur to VS Code Copilot 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 VS Code Copilot

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Team-wide MCP Server access

Commit your config to `.vscode/mcp.json` so every developer uses the same tools. It removes the friction of manual setup for new team members. `create_virtual_server` ensures everyone on the team can spin up consistent test environments. It keeps your QA process predictable.

Verify payloads in VS Code

Use `get_message_content` to inspect email bodies directly in the editor. You can verify HTML rendering or link structure without leaving your IDE. `search_server_messages` allows the agent to find specific items based on recipient data. It simplifies debugging complex notification logic.

Maintain clean test environments

Call `clear_server_inbox` in your CI/CD scripts to prevent cross-test contamination. It keeps your test suite reliable and fast. `delete_specific_message` handles the cleanup of individual test artifacts. It ensures you only keep the data you need for audit logs.

Setup guide

Set up Mailosaur MCP in VS Code Copilot

Prerequisites

VS Code 1.99 or later with GitHub Copilot extension
Active Vinkius subscription with a valid endpoint token

1

Open MCP configuration

Open the Command Palette (Cmd+Shift+P / Ctrl+Shift+P) and run "MCP: Add Server". Select HTTP (Streamable) as the server type. VS Code will create .vscode/mcp.json in your workspace.
2

Add the Mailosaur MCP

Paste the JSON snippet shown on the right into your .vscode/mcp.json. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Switch to Agent mode

Open Copilot Chat (Cmd+Shift+I / Ctrl+Shift+I) and switch to Agent mode using the dropdown. MCP tools are only available in Agent mode — they do not appear in Edit or Ask modes.
4

Verify the connection

In the Copilot Chat input, type # to list available tools. You should see the Mailosaur tools listed. Try asking: "List my recent Mailosaur transactions" and Copilot will invoke them automatically.

.vscode/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 VS Code Copilot

Add the server to your project's `.vscode/mcp.json` file. When you push this to Git, the entire team gets access to the same testing tools.

Yes. When you switch to Agent mode, Copilot can call these tools to verify email delivery as part of your automated test workflow.

Absolutely. You can write scripts that invoke these tools to confirm your application is sending the correct notifications to users.

The server uses your API key to authenticate with the service. By using project-level config files, you ensure that only authorized team members have access.

It accesses your virtual inbox messages, including email and SMS content. All data is handled through secure API calls and never persists beyond your active session.

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