How do I find my Mailshake API Key?

Log in to Mailshake, navigate to 'Extensions' in the main menu, and select 'API' to generate or copy your personal API key.

What is the difference between a Lead and a Recipient?

A Recipient is anyone added to a campaign. A Lead is a recipient who has met specific engagement criteria (like replying) and is tracked in the 'Lead Catcher'.

Can I add multiple prospects at once?

Yes, the `add_prospects_to_campaign` tool accepts a JSON body where you can provide a list of multiple recipients to be added in a single request.

Mailshake MCP Server for Google ADK 9 tools — connect in under 2 minutes

Name: Mailshake
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 Mailshake 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

Open in ChatGPT Open in Claude Open in Perplexity

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="mailshake_agent",
    instruction=(
        "You help users interact with Mailshake "
        "using 9 available tools."
    ),
    tools=[mcp_tools],
)

Fully ManagedVinkius Servers

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High SecurityEnterprise-grade

IAMAccess control

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DLPData protection

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Ed25519Audit chain

<40msKill switch

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 Mailshake MCP Server

Connect your Mailshake account to any AI agent to automate your cold outreach and sales engagement workflows. This MCP server enables your agent to manage campaigns, promote prospects to lead status, and track email interactions directly from natural language interfaces.

Google ADK natively supports Mailshake 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

Campaign Management — List all outreach campaigns, retrieve detailed sequences, and pause or unpause sending
Lead Tracking — Monitor qualified leads, retrieve interaction histories, and update prospect statuses
Prospect Ingestion — Programmatically add new recipients to existing campaigns to keep your pipeline full
Message Insights — List sent and received messages and retrieve full content for automated sentiment analysis or follow-up planning
Audience Oversight — List all recipients in a campaign and monitor their individual engagement stages (Sent, Opened, Replied)

The Mailshake 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 Mailshake to Google ADK via MCP

Follow these steps to integrate the Mailshake 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 Mailshake via MCP

Why Use Google ADK with the Mailshake MCP Server

Google ADK provides unique advantages when paired with Mailshake 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 Mailshake

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 Mailshake tools with BigQuery, Vertex AI, and Cloud Functions

Mailshake + Google ADK Use Cases

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

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

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

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

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

Mailshake MCP Tools for Google ADK (9)

These 9 tools become available when you connect Mailshake to Google ADK via MCP:

add_prospects_to_campaign

Requires a JSON body with recipient details. Add new prospects to an existing campaign

get_campaign_details

Get details for a specific campaign

get_lead_history

Get history for a specific lead

get_message_content

Get content for a specific email message

list_campaign_leads

List qualified leads

list_campaign_recipients

List all recipients in a campaign

list_outreach_campaigns

List all outreach campaigns

list_outreach_messages

List sent and received messages

pause_outreach_campaign

Pause a running campaign

Example Prompts for Mailshake in Google ADK

Ready-to-use prompts you can give your Google ADK agent to start working with Mailshake immediately.

"List all my active outreach campaigns in Mailshake."

"Show recent leads for the 'Partnership' campaign."

"Pause the campaign with ID '12345'."

Troubleshooting Mailshake MCP Server with Google ADK

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

McpToolset not found

Update: pip install --upgrade google-adk

Mailshake + Google ADK FAQ

Common questions about integrating Mailshake 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.