How do I connect MailerCheck to my AI?

You subscribe to the MCP on Vinkius and enter your MailerCheck API Token. Once connected, you can use it in any MCP-compatible client like Claude or Cursor.

Can I verify large lists of emails?

Yes. You can use the create_verification_batch capability to upload large lists for asynchronous processing.

How do I know how many credits I have left?

Your agent can check this for you using the get_account_info capability.

What happens if an email is invalid?

The agent can retrieve detailed status reports for your batches, including specific reason codes for why an email was marked invalid.

Which AI clients work with this MCP?

This MCP works with any compatible client, including Claude, Cursor, Windsurf, and VS Code.

What is the accuracy of MailerCheck verification?

MailerCheck uses advanced multi-layer checks including syntax, DNS, and SMTP handshake to provide highly accurate results categorized into valid, risky, and invalid.

How do I check my remaining credits?

Use the get_account_info capability to retrieve your profile details and the current balance of verification credits in your account.

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Connect MailerCheck to ChatGPT, Claude and Gemini

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Clean your contact lists and protect your sender reputation.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

Waiting for input…

Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 5 capabilities

We ship only the actions that matter.

Capability set01 / 02

01-03

3 capabilities in this set.

Part of 5 available through MailerCheck.

01
List verification batches
This capability pulls a list of your most recent email verification jobs.
02
Verify single email
Use this to check if a specific email address is valid or risky in real time.
03
Get account info
This capability retrieves your current account details and your remaining verification credits.

Capability set02 / 02

04-05

2 capabilities in this set.

Part of 5 available through MailerCheck.

04
Create verification batch
This capability starts a new batch verification job using a name and a list of emails you provide.
05
Get batch results
Use this to pull the specific validation results and status reports for a completed batch.

Real work

What teams actually run

Lead Verification

Verify a single prospect's email address as soon as you find it in your research.

Newsletter Cleanup

Upload an old subscriber list to identify and remove invalid addresses in bulk.

CRM Maintenance

Run batch checks on exported CRM data to ensure your database is accurate.

Developer Workflows

Monitor the progress of large email validation jobs while you continue coding.

Automate a task

Put MailerCheck to work on one thing.

Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.

One connector, every AI

MailerCheck works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

Building your own app? The connector is yours to use.

You don't need a client to put MailerCheck to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

1008ms average. Fast in production.

MailerCheck is checked daily against the live service.

Daily averagePeak 1136ms

Oct 3Today

Fastest day: 859ms
Slowest day: 1136ms
14-day trend: Slowing+23%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 5 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of MailerCheck, so you can see the experience inside your AI.

It does not authenticate your account with MailerCheck. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

MailerCheck Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_bReO4JgixfNfr2miQG0Lc9UB76MtllaR3Xy06Fz5/mcp

Claude Desktop

Follow the steps below to connect in seconds.

1In Claude Desktop, open Settings → Connectors.
2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
3Click Add and start a new chat — MailerCheck capabilities are ready to use.

Configuration · claude_desktop_config.jsonCopy

{
  "mcpServers": {
    "mailercheck-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_bReO4JgixfNfr2miQG0Lc9UB76MtllaR3Xy06Fz5/mcp"
    }
  }
}

Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up MailerCheck in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work MailerCheck owners hand off.

Professionals who need to maintain clean contact data without leaving their primary work environment.

01
Email Marketers
They use the agent to clean contact lists to protect sender reputation.
02
Sales and Outreach Teams
They verify new leads instantly to minimize bounce rates during outreach.
03
Growth Engineers
They integrate validation logic and batch monitoring into their development capabilities.

FAQ

Questions MailerCheck owners ask.

01
How do I connect MailerCheck to my AI?
You subscribe to the MCP on Vinkius and enter your MailerCheck API Token. Once connected, you can use it in any MCP-compatible client like Claude or Cursor.
02
Can I verify large lists of emails?
Yes. You can use the create_verification_batch capability to upload large lists for asynchronous processing.
03
How do I know how many credits I have left?
Your agent can check this for you using the get_account_info capability.
04
What happens if an email is invalid?
The agent can retrieve detailed status reports for your batches, including specific reason codes for why an email was marked invalid.
05
Which AI clients work with this MCP?
This MCP works with any compatible client, including Claude, Cursor, Windsurf, and VS Code.
06
What is the accuracy of MailerCheck verification?
MailerCheck uses advanced multi-layer checks including syntax, DNS, and SMTP handshake to provide highly accurate results categorized into valid, risky, and invalid.
07
How do I check my remaining credits?
Use the get_account_info capability to retrieve your profile details and the current balance of verification credits in your account.

Explore

More in Security Compliance

Connect MailerCheck to Claude, Cursor, ChatGPT & more

Your AI does the work. We keep it safe and sound.

Each Connector runs inside its own sealed environment.

One switch stops every agent. Instantly.

Spending limits that pause instead of surprise.

We ship only the actions that matter.

01-03

List verification batches

Verify single email

Get account info

04-05

Create verification batch

Get batch results

What teams actually run

Lead Verification

Newsletter Cleanup

CRM Maintenance

Developer Workflows

Building your own app? The connector is yours to use.

MailerCheck Connector

Claude Desktop

Email Marketers

Sales and Outreach Teams

Growth Engineers

How do I connect MailerCheck to my AI?

Can I verify large lists of emails?

How do I know how many credits I have left?

What happens if an email is invalid?

Which AI clients work with this MCP?

What is the accuracy of MailerCheck verification?

How do I check my remaining credits?

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