Verify an email address

Verify an email address

Checks whether an email address is deliverable and returns its status (valid, invalid, accept_all, webmail, disposable or unknown), a score and the checks behind it.

Note: Past 20 seconds it returns 202: call again with the same email until the result arrives. Read status, not the deprecated result. Costs half a credit and saves the email to your Hunter leads unless that is turned off.

Set up

Use the first option your agent supports.

MCP (official, remote)

Add this server to your agent's MCP settings, then sign in when asked.

{ "mcpServers": { "hunter": { "url": "https://mcp.hunter.io/mcp" } } }

Call the MCP tool Email-Verifier.

Server URL: https://mcp.hunter.io/mcp

API (official)

• Base URL: https://api.hunter.io/v2
• Endpoint: GET /email-verifier
• Auth: send the header X-API-Key: $HUNTER_API_KEY
• Get a key: https://hunter.io/api-keys
• Docs: https://hunter.io/api-documentation/v2

Before anything else, confirm access with the cheapest read-only call, like a list or a search. Never send or change anything to test access.

Rules

• Ask the user before anything that sends messages, costs money, or changes data, and say how many records it touches. One approval covers a batch the user has seen.
• Never print API keys.