# MailerCheck MCP for AI Agents AI Agent Connect > MailerCheck MCP validates email addresses in real-time or bulk. It lets your agent check if leads are valid, risky, or dead before you hit send. Use it to clean lists, monitor batch progress, and keep your sender reputation high without manual checking. ## Overview - **Category:** security-compliance - **Price:** Free - **Endpoint:** https://edge.vinkius.com/vk_preview_bReO4JgixfNfr2miQG0Lc9UB76MtllaR3Xy06Fz5/ai-agent-connect - **Tags:** email-verification, deliverability, sender-reputation, data-hygiene, validation-api ## Description MailerCheck lets you connect your account to any AI agent to automate your email hygiene. This Connector handles the heavy lifting of verifying addresses so you don't have to manually scrub your lists. You can ask your agent to check a single lead on the fly or dump a massive CSV for background processing. It gives you a clear picture of your account status and the results of every batch you run. Because Vinkius hosts this, you can integrate it into your existing workflow without jumping between tabs. It's about making sure your messages actually hit the inbox instead of the spam folder. Instead of spending your afternoon copy-pasting emails into a browser and waiting for results, you can just tell your agent to do it while you focus on your actual work. You get a clean, verified list that keeps your domain reputation safe and your bounce rates low. It's a direct way to ensure your outreach stays effective without the manual overhead of data cleaning. For those who manage high-volume outbound campaigns, this means you can move from lead generation to actual conversation much faster. You stop worrying about hard bounces and start focusing on the people who actually want to hear from you. ## Tools ### list_verification_batches See a list of your recent batch jobs. Use this to find specific IDs for jobs you started earlier. ### create_verification_batch Upload a list of emails for bulk checking. This handles the heavy lifting for large datasets. ### verify_single_email Check one email address immediately. It's perfect for real-time verification during a conversation. ### get_account_info See your current account status and balance. Use this to keep track of your remaining credits. ### get_batch_results Pull the final report for a specific batch. This shows you exactly which emails passed or failed. ## Prompt Examples **Prompt:** ``` Check if sales@example.com is a safe address to email. ``` **Response:** ``` I've checked that address for you. Here is the status: | Email | Status | Risk Level | | :--- | :--- | :--- | | sales@example.com | **Valid** | Low | It's safe to send your message to this recipient. ``` **Prompt:** ``` I have a list of 200 emails from my latest lead magnet. Can you verify them for me? ``` **Response:** ``` I've started a verification batch for those 200 emails. * **Batch Name:** Webinar Leads * **Status:** Processing * **Estimated Time:** 2 minutes I'll let you know as soon as the results are ready. ``` **Prompt:** ``` Show me the results for the batch I ran earlier called 'Webinar Leads'. ``` **Response:** ``` I've pulled the results for the 'Webinar Leads' batch. **Summary:** * **Total Emails:** 200 * **Valid:** 174 * **Risky:** 12 * **Invalid:** 14 The invalid emails were flagged for reasons like 'mailbox full' or 'non-existent domain'. Would you like me to show you the list of valid addresses? ``` ## Capabilities ### Check if an email is safe to send Your agent verifies a single address instantly to see if it's valid, risky, or dead. ### Process large lists in the background Upload thousands of emails at once for asynchronous validation without waiting for each one. ### See specific failure reasons Get detailed status reports that explain exactly why an email address failed verification. ### Track past verification jobs Look up the history of your previous batches and their technical metadata. ### Monitor your credit balance Check your account details and remaining verification credits directly through your agent. ## Use Cases ### 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. ### 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. ### 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. ### Automated data hygiene A developer uses the Connector to build a tool that automatically validates emails as they are entered into a signup form, preventing bad data from entering the database. ## Benefits - Keep your sender reputation high by using verify_single_email to catch bad addresses before they cause a bounce. - Handle massive datasets without manual work by using create_verification_batch to process thousands of leads at once. - Get instant feedback on why emails failed using get_batch_results to identify patterns in your lead sources. - Monitor your spend and usage easily with get_account_info to ensure your automation stays within budget. - Stay organized on large projects by using list_verification_batches to track the progress of multiple concurrent jobs. ## How It Works The bottom line is you get a clean, verified list ready for outreach without ever leaving your AI chat interface. 1. Connect your MailerCheck API token to the Connector. 2. Provide your agent with a single email or a full list for verification. 3. Receive a breakdown of valid, risky, and invalid addresses ready for your workflow. ## Frequently Asked Questions **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` tool 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` tool to retrieve your profile details and the current balance of verification credits in your account.