What is an 'Enhanced' address in Mailsac?

An enhanced address is a private inbox that only you can access. Use the `reserve_new_address` tool to make an address private/enhanced.

Can I read the raw SMTP source of an email?

While this server provides tools for HTML and Plain Text bodies, the Mailsac API supports raw data retrieval. You can use the text body tool to extract key technical metadata.

Is an API Key required for all addresses?

Yes, this MCP server requires an API Key to interact with your account and access your reserved resources and private messages.

Mailsac MCP Server for VS Code Copilot 9 tools — connect in under 2 minutes

Name: Mailsac
Availability: InStock
Author: Vinkius

code.visualstudio.com/docs/copilot/chat/mcp-servers

Built by Vinkius GDPR 9 Tools IDE

GitHub Copilot in VS Code is the most widely adopted AI coding assistant, embedded directly into the world's most popular code editor. With MCP support in Agent mode, Copilot can access external data and APIs to generate context-aware code grounded in real-time information.

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Vinkius supports streamable HTTP and SSE.

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The modern way to manage MCP Servers — no config files, no terminal commands. Install Mailsac and 2,500+ MCP Servers from a single visual interface.

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Classic Setup·json

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

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Stream every event to Splunk, Datadog, or your own webhook in real-time

* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About Mailsac MCP Server

Connect your Mailsac account to any AI agent to automate your email testing and inbox management. This MCP server enables your agent to reserve private email addresses, retrieve and search for messages, and inspect HTML or plain text bodies directly from natural language interfaces.

GitHub Copilot Agent mode brings Mailsac data directly into your VS Code workflow. With a project-scoped config, the entire team shares access to 9 tools. Copilot queries live data, generates typed code, and writes tests from actual API responses, all without leaving the editor.

What you can do

Inbox Oversight — List and manage your reserved (enhanced) addresses and custom domains
Instant Retrieval — Fetch a list of messages received by any address in your account instantly
Content Extraction — Retrieve sanitized HTML or raw plain text bodies to extract verification codes or links
Inbox Maintenance — Permanently delete individual messages or clear entire inboxes via simple commands
Infrastructure Management — Reserve new private addresses programmatically for isolated testing flows
Global Search — Query messages across all your addresses using advanced search parameters (requires paid tier)

The Mailsac MCP Server exposes 9 tools through the Vinkius. Connect it to VS Code Copilot in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect Mailsac to VS Code Copilot via MCP

Follow these steps to integrate the Mailsac MCP Server with VS Code Copilot.

Create MCP config

Create a .vscode/mcp.json file in your project root

Add the server config

Paste the JSON configuration above

Enable Agent mode

Open GitHub Copilot Chat and switch to Agent mode using the dropdown

Start using Mailsac

Ask Copilot: "Using Mailsac, help me...". 9 tools available

Why Use VS Code Copilot with the Mailsac MCP Server

GitHub Copilot for Visual Studio Code provides unique advantages when paired with Mailsac through the Model Context Protocol.

VS Code is used by over 70% of developers. adding MCP tools to Copilot means your team can leverage external data without leaving their primary editor

Project-scoped MCP configs (`.vscode/mcp.json`) let you commit server configurations to your repository, ensuring the entire team shares the same tool access

Copilot's Agent mode integrates MCP tools seamlessly with file editing, terminal commands, and workspace search in a single agentic loop

GitHub's enterprise compliance and audit features extend to MCP tool usage, providing visibility into how AI interacts with external services

Mailsac + VS Code Copilot Use Cases

Practical scenarios where VS Code Copilot combined with the Mailsac MCP Server delivers measurable value.

Live API integration: Copilot can query an MCP server, inspect the response schema, and generate typed API client code in the same step

DevSecOps workflows: security teams can give developers access to domain intelligence tools directly in their editor for real-time vulnerability assessment during code review

Data pipeline development: Copilot fetches sample data via MCP and generates transformation scripts, validators, and test fixtures from actual API responses

Documentation generation: Copilot queries available tools and auto-generates README sections, API reference docs, and usage examples

Mailsac MCP Tools for VS Code Copilot (9)

These 9 tools become available when you connect Mailsac to VS Code Copilot via MCP:

delete_inbox_message

Permanently remove a message from an inbox

get_html_message_body

Get the sanitized HTML body of a specific message

get_plain_text_body

Get the plain text body of a specific message

list_custom_domains

List custom domains linked to the account

list_inbox_messages

List messages in a specific inbox

list_reserved_addresses

List all reserved (enhanced) email addresses

release_reserved_address

Delete/Release a reserved email address

reserve_new_address

Reserve a specific email address

search_account_messages

Requires a paid Mailsac tier. Use query params like to, from, subject. Search for messages across all addresses

Example Prompts for Mailsac in VS Code Copilot

Ready-to-use prompts you can give your VS Code Copilot agent to start working with Mailsac immediately.

"List all my reserved email addresses in Mailsac."

"Fetch the plain text content of the last email sent to 'test-user@mailsac.com'."

"Reserve a new private address 'automation-flow@mailsac.com'."

Troubleshooting Mailsac MCP Server with VS Code Copilot

Common issues when connecting Mailsac to VS Code Copilot through the Vinkius, and how to resolve them.

MCP tools not available

Ensure you are in Agent mode in Copilot Chat. MCP tools only appear in Agent mode.

Mailsac + VS Code Copilot FAQ

Common questions about integrating Mailsac MCP Server with VS Code Copilot.

Which VS Code version supports MCP?

MCP support requires VS Code 1.99 or later with the GitHub Copilot extension. Ensure both are updated to the latest version. Older versions of Copilot may not expose the Agent mode toggle.

How do I switch to Agent mode?

Open the Copilot Chat panel and look for two mode options: "Ask" and "Agent". Click "Agent" to enable autonomous tool calling. In Ask mode, Copilot provides conversational answers but cannot invoke MCP tools.

Can I restrict which MCP tools Copilot can access?

Yes. VS Code shows a tool consent dialog before any MCP tool is invoked for the first time. You can also configure tool access policies at the organization level through GitHub Copilot settings.

Does MCP work in VS Code Remote or Codespaces?

Yes. MCP servers configured via .vscode/mcp.json work in Remote SSH, WSL, and GitHub Codespaces environments. The MCP connection is established from the remote host, so ensure the server URL is accessible from that environment.