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 Google ADK 9 tools — connect in under 2 minutes

Name: Mailsac
Availability: InStock
Author: Vinkius

google.github.io/adk-docs/tools/mcp-tools

Built by Vinkius GDPR 9 Tools SDK

Google Agent Development Kit (ADK) is Google's framework for building production AI agents. Add Mailsac as an MCP tool provider through Vinkius and your ADK agents can call every tool with full schema introspection.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

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Vinkius supports streamable HTTP and SSE.

python

from google.adk.agents import Agent
from google.adk.tools.mcp_tool import McpToolset
from google.adk.tools.mcp_tool.mcp_session_manager import (
    StreamableHTTPConnectionParams,
)

# Your Vinkius token. get it at cloud.vinkius.com
mcp_tools = McpToolset(
    connection_params=StreamableHTTPConnectionParams(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
    )
)

agent = Agent(
    model="gemini-2.5-pro",
    name="mailsac_agent",
    instruction=(
        "You help users interact with Mailsac "
        "using 9 available tools."
    ),
    tools=[mcp_tools],
)

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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.

Google ADK natively supports Mailsac as an MCP tool provider. declare Vinkius Edge URL and the framework handles discovery, validation, and execution automatically. Combine 9 tools with Gemini's long-context reasoning for complex multi-tool workflows, with production-ready session management and evaluation built in.

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 Google ADK 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 Google ADK via MCP

Follow these steps to integrate the Mailsac MCP Server with Google ADK.

Install Google ADK

Run pip install google-adk

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Create the agent

Save the code above and integrate into your ADK workflow

Explore tools

The agent will discover 9 tools from Mailsac via MCP

Why Use Google ADK with the Mailsac MCP Server

Google ADK provides unique advantages when paired with Mailsac through the Model Context Protocol.

Google ADK natively supports MCP tool servers. declare a tool provider and the framework handles discovery, validation, and execution

Built on Gemini models, ADK provides long-context reasoning ideal for complex multi-tool workflows with Mailsac

Production-ready features like session management, evaluation, and deployment come built-in. not bolted on

Seamless integration with Google Cloud services means you can combine Mailsac tools with BigQuery, Vertex AI, and Cloud Functions

Mailsac + Google ADK Use Cases

Practical scenarios where Google ADK combined with the Mailsac MCP Server delivers measurable value.

Enterprise data agents: ADK agents query Mailsac and cross-reference results with internal databases for comprehensive analysis

Multi-modal workflows: combine Mailsac tool responses with Gemini's vision and language capabilities in a single agent

Automated compliance checks: schedule ADK agents to query Mailsac regularly and flag policy violations or configuration drift

Internal tool platforms: build self-service agent platforms where teams connect their own MCP servers including Mailsac

Mailsac MCP Tools for Google ADK (9)

These 9 tools become available when you connect Mailsac to Google ADK 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 Google ADK

Ready-to-use prompts you can give your Google ADK 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 Google ADK

Common issues when connecting Mailsac to Google ADK through the Vinkius, and how to resolve them.

McpToolset not found

Update: pip install --upgrade google-adk

Mailsac + Google ADK FAQ

Common questions about integrating Mailsac MCP Server with Google ADK.

How does Google ADK connect to MCP servers?

Import the MCP toolset class and pass the server URL. ADK discovers and registers all tools automatically, making them available to your agent's tool-use loop.

Can ADK agents use multiple MCP servers?

Yes. Declare multiple MCP tool providers in your agent configuration. ADK merges all tool schemas and the agent can call tools from any server in a single turn.

Which Gemini models work best with MCP tools?

Gemini 2.0 Flash and Pro models both support function calling required for MCP tools. Flash is recommended for latency-sensitive use cases, Pro for complex reasoning.