Kickbox MCP for AI. Keep your email lists clean before you send another blast.

Q: Can I check if a single email address is valid before adding it to my database?

Yes! Use the verifyemail tool with the email address. The agent will return real-time results indicating if the email is deliverable, undeliverable, or risky.

Q: How do I verify a large list of emails at once?

You can use the startbatchverification tool. Provide an array of email addresses, and the server will start a background job and return a Job ID for tracking.

Q: How can I check if my batch verification job is finished?

Use the getbatchstatus tool with your Job ID. It will provide the current status (processing, completed, etc.), progress percentage, and a download URL if the job is done.

Claude

ChatGPT

Cursor

Gemini

Windsurf

VS Code

JetBrains

Vercel

See Vinkius in Action

Works with every AI agent you already use

…and any MCP-compatible client

Connect to your AI in seconds.

Kickbox verifies email addresses in real time or in large batches to keep your mailing lists accurate and deliverable. Stop sending emails that bounce off invalid accounts.

Use this MCP to instantly check if an address is safe, disposable, or undeliverable before you hit send, protecting your sender reputation.

What your AI can do

Get batch status

Retrieves the current progress and status of a running batch verification job using its unique Job ID.

Start batch verification

Begins a large job to verify an entire list of emails, returning an ID you can track later.

Verify email

Checks whether a single email address is valid for receiving mail right now.

Check a single email address

Instantly confirms if one specific email is deliverable, undeliverable, or risky.

Process entire mailing lists

Runs large-scale jobs to validate thousands of addresses in a single batch operation.

Monitor job progress

Tracks the status of your background batch verification tasks until they are complete.

Ask an AI about this

Included with Plan

Waiting for input…

AI Agent

Kickbox: 3 Tools for Email Validation

These tools let you check emails in real time, start massive batch jobs, and track the progress of your entire data cleaning process.

Make your AI actually useful.

Add this MCP to Claude, Cursor, or Windsurf and your AI stops guessing. It gets real tools to look things up, take action, and handle the stuff you keep doing by hand.

Start using Kickbox on Vinkius

Get Batch Status

Retrieves the current progress and status of a running batch verification job using its unique Job ID.

Start Batch Verification

Begins a large job to verify an entire list of emails, returning an ID you can track...

Verify Email

Checks whether a single email address is valid for receiving mail right now.

Security and governance baked right in.

Pick your AI client below to get set up. Just create a Vinkius account, subscribe, and you're instantly up and running. We handle the entire backend infrastructure, delivering out-of-the-box support for HTTPS Streamable, SSE, and OAuth2—zero messy routing required.

Claude AI

Open Claude Settings

Go to claude.ai, click your profile icon, then navigate to Customize → Connectors.

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.

Start a conversation

Open a new chat. The Kickbox integration is available immediately — no restart needed.

Antigravity

Configure Agent Environment

Open your Antigravity agent's workspace configuration or mcp-servers.json file.

Bind the Endpoint

Add the Vinkius endpoint URL to your agent's MCP connections list:

"mcp_servers": {
  "kickbox": {
    "serverUrl": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
  }
}

Provide your secure token in place of [YOUR_TOKEN_HERE] to ensure your agent requests are authenticated.

Execute

Start your Antigravity session. The agent will autonomously discover and utilize the Kickbox tools with full Vinkius guardrails applied.

VS Code Copilot

⚡

One-Click Install (Recommended)

In your Vinkius Dashboard, simply click the Add to VS Code button for this server. We'll automatically configure your local workspace.

Or configure manually

Open MCP Settings

Open VS Code, press Ctrl/Cmd + Shift + P, and search for GitHub Copilot: MCP Servers.

Add Server Config

Add the Vinkius endpoint configuration to your mcp-servers.json file:

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

Ensure you replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.

LangChain

Install Dependencies

Install the LangChain MCP adapters for your environment:

pip install langchain-mcp-adapters

Connect the Server

Use the SSEClient in LangChain to connect to the Vinkius managed endpoint:

from langchain_mcp_adapters.client import SSEClient

# Connect to Vinkius
client = SSEClient(url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp")
tools = client.get_tools()

CrewAI

Define the Tool

Load the Vinkius MCP tools into your CrewAI agents:

from crewai import Agent
from mcp_crewai import MCPTool

# Connect securely to Vinkius
vinkius_tools = MCPTool(url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp")

# Assign to Agent
researcher = Agent(
    role='Data Researcher',
    tools=vinkius_tools.get_all()
)

Execute Task

Run your CrewAI process. The agent will autonomously route tasks to the Vinkius managed server.

Choose How to Get Started

Build a custom MCP for your own tools, or connect a ready-made integration from our catalog.

Build Your Own

Turn any API into an MCP. Import a spec, define Agent Skills, or deploy with MCPFusion.

Import from OpenAPI, Swagger, or YAML specs
Create Agent Skills with progressive disclosure
Deploy to edge with MCPFusion framework
Built in DLP, auth, and compliance on every call
Real time usage dashboard and cost metering
Publish to catalog or keep private

Start building

Make Your AI Do More

Start with Kickbox, then connect any of our 5,100+ other servers whenever your AI needs more. One click, no limits.

Use this MCP plus 5,100+ others, all in one place
Add new capabilities to your AI anytime you want
Every connection is secured and compliant automatically
Track usage and costs across all your servers
Works with Claude, ChatGPT, Cursor, and more
New servers added to the catalog every week

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Kickbox. 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.

VINKIUS INFRASTRUCTURE

Cloud Hosted

Managed infra

V8 Isolated

Sandboxed per request

Zero-Trust Proxy

No stored credentials

DLP Enforced

Policy on every call

GDPR Compliant

EU data residency

Token Compression

~60% cost reduction

Your data is protected. See how we built it.

Works with Claude, ChatGPT, Cursor, and more

The Model Context Protocol standardizes how applications expose capabilities to LLMs. Instead of operating in isolation, your AI gains direct access to external platforms, live data, and real-world actions through secure, standardized connections.

This connection provides 3 powerful capabilities that interface natively with Claude, ChatGPT, Cursor, and other compatible AI platforms. No middleware. No custom integration required.

Cleaning up email lists used to be a tedious, manual chore.

Today, if you get a new list of leads, you spend hours or days copy-pasting emails into multiple validation tools. You track the status manually; you check one hundred addresses here, then switch tabs to check another hundred there. It’s slow work, and it makes mistakes.

With this MCP, your agent handles the whole process automatically. You just ask for a list scrub. The system runs in the background, tracks its own progress, and hands back a perfectly clean report of only valid contacts.

Kickbox makes reliable email validation simple.

You no longer need to jump between multiple services just to check status or process batches. The whole workflow, from initial upload to final report retrieval, happens through one consistent set of tools you call via your agent.

This changes everything. You get reliable data immediately, allowing your campaigns to run faster and hit real inboxes every single time.

Support 24/7 support@vinkius.com ↗

Security Vinkius Trust Center ↗

SLA Service Level Agreement ↗

Report Listing Send Report ↗

What your AI can actually do with this

Sending bulk emails requires clean data. You need to know which addresses are actually live inboxes and which ones will just bounce back. This connector lets your agent validate email lists, whether you're checking a single contact or processing thousands of records at once. It identifies risky addresses, like throwaway accounts or generic role names, so your campaigns hit the right people every time.

You simply ask your AI client to check data, and it handles the validation process automatically. This makes list scrubbing simple—you don't need complex API calls or dedicated database jobs. Just connect this MCP through Vinkius and let your agent take care of the dirty work.

Built · Hosted · Managed by Vinkius Kickbox-MCP - Verify Email Addresses in Bulk

Server ID 019ea5f4-202e-71d0-b43a-4588b2228eb3

Vinkius Inspector

Compliance Grade A+

Score 100/100

Report View Report ↗

What Changes When You Connect

Stops wasted emails. By using verify_email, you confirm an address is deliverable instantly, saving money on failed campaigns and protecting your sender score.

Handles massive data sets. If you have thousands of leads, the batch processing tools allow you to run a large job that updates entire mailing lists in one go.

Saves time tracking jobs. You never lose track of a big verification task. Use get_batch_status to monitor progress without manually checking dashboards until results are ready.

Reduces bounce rates. Identifying disposable or invalid addresses upfront means your marketing automation platform only sends messages that actually count.

Protects reputation. This MCP helps you filter out dangerous addresses—like role-based accounts—keeping your sender score high for future outreach.

See it in action

01 01

New list acquisition needs cleaning

A marketing team just uploaded a new lead file of 10,000 contacts. Instead of risking sending to invalid addresses, they ask their agent to start_batch_verification on the entire list first. Once complete, the clean data is ready for campaign use.

02 02

Pre-sending check for a single prospect

An SDR pulls up a contact's email address during a call. They immediately ask their agent to verify_email using that specific address, confirming it’s active and safe before sending the follow-up pitch.

03 03

Debugging failed campaigns

The campaign bounce rate jumped unexpectedly. The ops engineer uses the status tools to check historical batch jobs, ensuring no data was lost or marked incorrectly during processing.

The honest tradeoffs

Checking lists piecemeal

Anti-pattern

Manually pasting 50 emails into a single online tool, then running the same process multiple times across different tabs.

The Fix

Don't check small chunks. Use start_batch_verification to upload your entire list at once. Then use get_batch_status until everything is done.

Ignoring status checks

Anti-pattern

Starting a huge batch job, walking away, and then assuming the results are ready when they aren't.

The Fix

Always remember to check the progress. Use get_batch_status with your Job ID until the status is 'completed'. Don’t wait for it; ask the agent to check.

When It Fits, When It Doesn't

Use this MCP if your primary goal is ensuring data quality before sending an email, especially at scale. If you're only concerned with what content to send next, this isn't helpful. But if list hygiene matters—if you need to know if user@domain.com actually exists and accepts mail—this is mandatory. Don't use it if your data source already guarantees perfection; but if you suspect old or junk emails are in the mix, run a batch job using start_batch_verification. Only use get_batch_status after running the initial start tool.

Questions you might have

Can I check if a single email address is valid before adding it to my database? +

Yes! Use the verify_email tool with the email address. The agent will return real-time results indicating if the email is deliverable, undeliverable, or risky.

How do I verify a large list of emails at once? +

You can use the start_batch_verification tool. Provide an array of email addresses, and the server will start a background job and return a Job ID for tracking.

How can I check if my batch verification job is finished? +

Use the get_batch_status tool with your Job ID. It will provide the current status (processing, completed, etc.), progress percentage, and a download URL if the job is done.

What do I need to know about authentication when using `verify_email`? +

You must provide a valid Kickbox API key in your agent's configuration. This ensures that your AI client can authorize the request and access the verification service.

If I run `start_batch_verification`, does it have any rate limits or quotas? +

Kickbox enforces standard rate limiting to protect its infrastructure. For extremely high-volume processing, check the official documentation for recommended batch sizes and throttling guidelines.

After using `get_batch_status`, how do I retrieve the actual results file? +

Once the job status is 'completed', the returned data object will contain a download URL. Use that specific link to fetch the full, processed report containing all email outcomes.

What happens if an address provided to `verify_email` is malformed or invalid? +

The tool returns a specific error code and message explaining the formatting issue. This prevents sending data that doesn't follow standard email syntax, helping you clean input proactively.

Can I use this MCP for workflows beyond my AI client (e.g., custom scripts)? +

This MCP is built as an open standard protocol. Any application that can interact with the Model Context Protocol framework can call its tools, allowing integration into various non-AI systems.

Connect to your AI in seconds.

Get batch status

Start batch verification

Verify email

Kickbox: 3 Tools for Email Validation

Make your AI actually useful.

Get Batch Status

Start Batch Verification

Verify Email

Security and governance baked right in.

Claude AI

Open Claude Settings

Add Custom Connector

Start a conversation

Claude Code

Open your terminal

Add the MCP Server

Start coding

Cursor

One-Click Install (Recommended)

Open Cursor Settings

Add New Server

Use in Composer

Antigravity

Configure Agent Environment

Bind the Endpoint

Execute

VS Code Copilot

One-Click Install (Recommended)

Open MCP Settings

Add Server Config

Windsurf

One-Click Install (Recommended)

Open Windsurf Settings

Add Server Endpoint

LangChain

Install Dependencies

Connect the Server

CrewAI

Define the Tool

Execute Task

Choose How to Get Started

Build Your Own

Make Your AI Do More

Works with Claude, ChatGPT, Cursor, and more

Cleaning up email lists used to be a tedious, manual chore.

Kickbox makes reliable email validation simple.

What your AI can actually do with this

Here's how it actually works

Who is this actually for?

What Changes When You Connect

See it in action

New list acquisition needs cleaning

Pre-sending check for a single prospect

Debugging failed campaigns

The honest tradeoffs

Checking lists piecemeal

Ignoring status checks

When It Fits, When It Doesn't

Questions you might have