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Vinkius

MailerCheck Connector for AI agents.

5 live capabilities

Verify lead emails and clean contact lists to protect your sender reputation.

Live agent request MailerCheck / Connector

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AI Agent

Why people use MailerCheck

Stop losing deliverability with MailerCheck email validation

This Connector changes that. You just tell your agent to run your list through MailerCheck. It handles the heavy lifting, identifies the risktopes, and gives you a clean list in seconds. You get to focus on the actual outreach instead of babysitting a spreadsheet.

  • Claude
  • ChatGPT
  • Gemini
  • Cursor
  • Visual Studio Code
  • Windsurf

What Vinkius changes

You get a clean, verified list ready for outreach without ever leaving your AI chat interface.

Use it from Claude, ChatGPT, Cursor or another AI client you already have.

One account · 5,900+ Connectors

  1. Real-world use case 01

    Cleaning a stale CRM database

    A marketing manager asks their agent to scrub a list of 5,000 old subscribers to identify which ones are still active before sending a newsletter.

  2. Real-world use case 02

    Real-time lead verification

    An SDR gets a new lead from a web form and asks their agent to check if the email is valid before they add it to their personal outreach sequence.

  3. Real-world use case 03

    Bulk webinar list validation

    A growth team uploads a list of 1,000 webinar attendees to check for valid addresses to ensure high deliverability for the follow-up campaign.

Complete set · 5capabilities

The complete MailerCheck capability set.

These are the exact actions your AI can choose when you ask it to work with MailerCheck.

Capability set01 / 02

01—03

3 capabilities in this set.

Part of 5 available through MailerCheck.

  1. 01 Capability

    List verification batches

    See a list of your recent batch jobs. Use this to find specific IDs for jobs you started earlier.

  2. 02 Capability

    Create verification batch

    Upload a list of emails for bulk checking. This handles the heavy lifting for large datasets.

  3. 03 Capability

    Verify single email

    Check one email address immediately. It's perfect for real-time verification during a conversation.

Capability set02 / 02

04—05

2 capabilities in this set.

Part of 5 available through MailerCheck.

  1. 04 Capability

    Get account info

    See your current account status and balance. Use this to keep track of your remaining credits.

  2. 05 Capability

    Get batch results

    Pull the final report for a specific batch. This shows you exactly which emails passed or failed.

Set up in minutes

One URL. Then ask MailerCheck to work.

Claude and ChatGPT only need the Connector URL. Copy it once, add it in settings, and use MailerCheck from the conversation.

Choose your client

Live preview
Advanced clients IDE · CLI

Claude · Web + desktop

Official guide ↗

Connector URL · ready to paste

Streamable HTTP
https://edge.vinkius.com/vk_preview_bReO4JgixfNfr2miQG0Lc9UB76MtllaR3Xy06Fz5/mcp
  1. Step 01

    Open Connectors

    In Claude Web or Claude Desktop, open Settings and choose Connectors.

  2. Step 02

    Add the URL

    Choose Add custom connector, name it MailerCheck, and paste the URL above.

  3. Step 03

    Turn it on in chat

    Select +, open Connectors, and enable MailerCheck for the conversation.

Where the request belongs

Work MailerCheck can move forward.

Built around the request

The growth marketer who's tired of watching their open rates tank because of hard bounces. It's for anyone who handles high-volume outbound email and needs to protect their domain reputation.

01

Email Marketer

Cleaning out old CRM lists before a big blast to keep the sender score healthy.

02

Sales Development Rep

Verifying a new lead list instantly before starting a personalized outreach sequence.

03

Growth Engineer

Automating the validation step in a lead generation pipeline to ensure data quality.

Bring your own AI

Change the model, client or framework. Keep MailerCheck connected.

  • Claude
  • ChatGPT
  • Gemini
  • Cursor
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Before you connect

Questions about MailerCheck.

The practical details behind the request, access and result.

How does MailerCheck MCP improve my email deliverability?

It prevents your emails from bouncing by identifying invalid or risky addresses before you send your campaign. By ensuring only clean data reaches your list, you protect your sender reputation and improve your open rates.

Can I verify large lists of emails using this Connector?

Yes, you can upload large lists for bulk processing. The Connector handles these in the background, allowing you to verify thousands of leads at once rather than one by one.

What happens if an email is marked as risky?

A risky status means the email is reachable but might have a high chance of landing in spam or being ignored. It's best to review these before sending high-priority outreach.

How do I see my remaining credits?

You can simply ask your agent to check your account status. It will pull your current balance and verification credits directly from your MailerCheck account.

Can this Connector help me clean my existing CRM list?

Absolutely. You can dump your entire CRM export into a batch to identify dead leads. This helps you prune your list and focus your marketing efforts on active users.

Is it better to verify emails one by one or in batches?

It depends on your goal. Use single verification for real-time checks during a conversation. Use batch verification for cleaning large databases or preparing new outreach lists.

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.

Can I verify large lists of emails?

Yes, use the create_verification_batch capability to upload a JSON array of email addresses. You can then monitor the progress and retrieve results once completed.

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.

One connection away

Give your agent a direct line to MailerCheck.

Connect MailerCheck once. Keep it beside 5,900+ managed Connectors when the next task needs more.

Explore every Connector No credit card required · Free tier available