Hunter MCP. Find and validate any professional email address.
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Hunter MCP Server lets your AI agent find, verify, and enrich professional email addresses for targeted outreach. You can search domains to find all associated emails, pinpoint a person's exact email using their name, and confirm if an address is actually deliverable.
This stops you from sending emails to dead addresses and makes your lead list reliable.
What your AI agents can do
Domain search
Finds all professional email addresses associated with a company domain.
Email count
Counts the total number of emails available for a given domain.
Email finder
Finds a specific person's email address using their name and a company domain.
The domain_search tool finds every professional email address associated with a given company domain.
The email_finder tool locates a specific person's professional email using their name and a company domain.
The email_verifier tool checks an email address's deliverability and validity status.
Tools like list_leads and list_recipients retrieve and manage existing prospect lists and campaign recipients.
The email_count tool determines the total number of emails associated with a specific domain.
The agent can list and retrieve details about campaigns and lead lists using tools like list_campaigns and list_lead_lists.
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Hunter MCP Server: 10 Tools for Lead Data Management
Use these tools to discover, verify, and manage professional email addresses and entire lead lists through your AI agent.
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 Hunter on Vinkius019d75b5domain search
Finds all professional email addresses associated with a company domain.
019d75b5email count
Counts the total number of emails available for a given domain.
019d75b5email finder
Finds a specific person's email address using their name and a company domain.
019d75b5email verifier
Checks if a specific email address is valid and can receive mail.
019d75b5get account
Retrieves information about your Hunter account.
019d75b5get campaign
Gets detailed information about a specific campaign.
019d75b5list campaigns
Lists all existing marketing campaigns.
019d75b5list lead lists
Lists all saved lead lists.
019d75b5list leads
Lists the contacts currently saved in your lead database.
019d75b5list recipients
Lists the recipients assigned to a specific campaign.
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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 server provides 10 capabilities that interface natively with Claude, ChatGPT, Cursor, and any MCP client. No middleware. No custom integration required.
Manual lead list building means cross-referencing spreadsheets and running multiple web searches.
Today, building a solid prospect list is a mess. You copy a company domain into one tool, then run it through a spreadsheet to guess common email patterns. Next, you jump to another site to check if the person exists, copy that email, and then paste it into a CRM. It takes hours of clicking and copy-pasting just to build one list.
With the Hunter MCP Server, you just tell your agent to build the list. It runs `domain_search` across the domain, finds the specific person with `email_finder`, and verifies it with `email_verifier`. You get the final, clean list in seconds. Period.
Hunter MCP Server: Discover, Verify, and Enrich Contacts
You're done with guessing patterns or relying on outdated data. The agent handles the whole flow: it first uses `domain_search` to gather the pool, then runs `email_verifier` on every contact to confirm deliverability, and finally, you use the resulting data to run a campaign via `get_campaign`.
It's not just about finding emails; it's about guaranteeing they work. This makes your entire outreach workflow reliable. No more guesswork, just actionable data.
What you can do with this MCP connector
Hunter's MCP Server lets your AI client find, check, and enrich professional email addresses for targeted outreach. You'll use it to search domains, find specific people's emails, and confirm if an address actually works. It stops you from sending messages to dead addresses, keeping your lead list solid.
Your agent can use domain_search to pull every professional email address tied to a company domain. Need to track how many emails are there? Use email_count to get the total count for any domain. To pinpoint a specific contact, email_finder locates a person's email using their name and a company domain.
You've got email_verifier to check if any email address is live and ready to receive mail. You can also pull account info with get_account, and manage your outreach efforts by listing campaigns with list_campaigns, getting details on one campaign with get_campaign, or listing recipients for a campaign using list_recipients. You'll find list_leads retrieves contacts from your lead database, and list_recipients handles recipients for specific campaigns.
Finally, you can manage your prospect data by listing saved lead lists with list_lead_lists.
019d75b5-9ad8-7318-a90b-0c956df48f9d 
How Hunter MCP Works
- 1 First, subscribe to the Hunter integration and copy your unique API key from your Hunter.io dashboard.
- 2 Next, prompt your AI agent. You tell it what you need—like finding emails for 'acme.com' or verifying 'bad@email.com'.
- 3 The agent uses the relevant tool (
domain_search,email_verifier, etc.) to pull the data, and you get back a clean, verified list of actionable contacts.
The bottom line is, your AI agent handles the complex data calls; you just tell it what list you need.
Who Is Hunter MCP For?
This is for the Growth Marketer who needs to scale outreach and the Sales Development Rep (SDR) who needs perfect data to hit quota. If your job involves building prospect lists or running campaigns, you need this. It's for anyone whose revenue depends on sending emails that actually get opened.
Uses the email_finder and email_verifier tools to locate decision-maker emails and confirm they are valid before adding them to an outreach sequence.
Uses domain_search and list_leads to build highly targeted prospect lists based on domain research, ensuring every contact is deliverable.
Uses list_campaigns and list_lead_lists to manage the lifecycle of prospect data and track which lists are ready for the next campaign send.
What Changes When You Connect
- Stops bad sends: Running
email_verifieron your list ensures addresses are deliverable before you hit send. No more wasted credits or damaged sender reputation. - Builds precise lists: Use
domain_searchto map out every potential email at a company domain. You get a full picture, not just a guess. - Saves time finding people: If you know the name and company,
email_finderquickly locates the exact address, skipping the manual guesswork. - Manages your pipeline: Tools like
list_leadsandlist_lead_listslet your agent track, organize, and pull up verified contacts for campaigns. - Know your campaign status:
list_campaignsandget_campaignlet you check campaign details and recipient lists, keeping your outreach workflow transparent. - Tracks your data source:
email_counttells you how many emails exist for a domain, giving you a quantitative idea of your total prospect pool.
Real-World Use Cases
Need to build a list of contacts at a target company.
The Growth Marketer needs to target Acme Corp. They ask their agent to run domain_search on 'acmecorp.com'. The agent returns all possible emails, which the marketer then filters and saves using the leads management tools.
A prospect list is old, and you suspect invalid emails.
Before sending a campaign, the SDR runs email_verifier against the entire list. The agent flags invalid addresses, allowing the SDR to clean the list before using get_campaign to send the message.
You need to find the specific email for a VP at a target company.
Instead of guessing, the user asks their agent to use email_finder with the VP's name and company. The agent gives a high-confidence, verified address instantly.
Need to check if a domain is worth pursuing.
The user first runs email_count on the domain. If the count is too low, they don't waste time. If the count is high, they proceed with domain_search to build a large, verified list.
The Tradeoffs
Sending lists without verification
Copying a list from an old spreadsheet and passing it straight to a campaign send. You waste money on failed sends and damage your sender reputation.
→
Always run email_verifier on the list first. Then, use list_leads to manage the clean data set before initiating the campaign via get_campaign.
Guessing the right email address
Trying random patterns like 'john.doe@company.com' until one works. This is slow, unreliable, and wastes time.
→
Use the email_finder tool. Give your agent the name and domain, and it returns the verified email with confidence scores.
Assuming the domain is valid
Running a campaign against a domain that might have changed its email server or is defunct. This causes high bounce rates.
→
First, run domain_search and email_count on the domain. If the count is zero or the search fails, stop. Don't proceed to list management.
When It Fits, When It Doesn't
Use this server if your core job is generating, verifying, or managing email contact lists. You need to know if an address is active right now. If your process involves gathering leads, validating their existence, and sending targeted outreach, this is mandatory. Don't use this if you just need to manage internal ticketing systems or read simple documents; those require a different type of tool. If you only need to know the count of emails at a domain, email_count is your tool, but you still need email_verifier to confirm the list is safe to use.
Common Questions About Hunter MCP
How do I use the Hunter MCP Server to find all emails at a domain? +
Run the domain_search tool. This tool searches the domain and returns every professional email address associated with it. You can then use email_count to see the total number of emails found.
Is `email_verifier` reliable for checking email addresses? +
Yes. The email_verifier tool checks the address's deliverability and validity status. It tells you if the domain's email server is reachable and if the address is safe to send to.
How do I find a specific person's email using the Hunter MCP Server? +
Use the email_finder tool. You just need to provide the person's name and the company domain to get the most likely email address.
What is the difference between `list_leads` and `list_recipients`? +
list_leads shows contacts saved in your general lead database. list_recipients shows the specific people assigned to a particular campaign you are running.
Can I use the Hunter MCP Server for bulk operations? +
Yes. You can use the email_verifier on large lists of contacts and then use the resulting clean data to initiate campaigns via get_campaign.
How do I use `domain_search` to check the total number of emails for a company? +
You use the email_count tool. This tool gives you the total number of emails associated with a domain. It's useful for quickly gauging the size of a company's contact base.
What should I do if `email_verifier` returns an 'Invalid' status? +
If the status is 'INVALID', you should not send an email to that address. This usually means the domain's mail server isn't configured properly. It's best to remove it from your outreach list.
How do I use `get_account` to check my Hunter API status? +
The get_account tool pulls your current account information. This lets you confirm your API key is active and check your remaining usage limits before running large tasks.
How do I get my Hunter.io API key? +
Log in to your Hunter.io account at hunter.io. In the left sidebar, click the API section (or go directly to hunter.io/api-keys). Your API key is displayed on this page. Click the copy button to copy it. Paste it into the configuration field below. Free plans include 25 searches and 50 verifications per month.
Can I find the email of a specific person at a company? +
Yes. Give your AI agent a person's first name, last name, and company domain, and it returns their most likely professional email address with a confidence score. Perfect for reaching out to specific decision-makers.
How accurate is the email verification? +
Hunter's verification checks MX records, SMTP responses, and catch-all configurations — returning a status of 'valid', 'invalid', 'accept_all', or 'unknown'. Valid emails have over 95% deliverability. Always verify before sending cold outreach to protect your sender reputation.
Does it work with free plans? +
Yes. Hunter offers a free plan with 25 email searches and 50 verifications per month. The API key works the same regardless of plan — the only difference is quota limits. Upgrade to a paid plan for higher volumes.
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Use it with your favorite AI tools
Connect this server to Cursor, Claude, VS Code, and more.