email-verifier

Verify email deliverability & find business emails (single or bulk) via the Verifox API.

Should I use this

Quality & Safety

A
Description quality
100%
Schema completeness
88%
Naming quality
100%
Poisoning risk
100%
Permission match
100%
Protocol compliance
100%

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~919Tokens (tool definitions)
~1.1 KBTypical response size
Moderate attention impact (0.72% of 128k context)

This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.

Install

One-Click Install

Add this to your `claude_desktop_config.json` file:

{
  "mcpServers": {
    "email-verifier": {
      "command": "npx",
      "args": [
        "verifox-mcp"
      ]
    }
  }
}

Runnable packages

npmverifox-mcp1.2.1stdio

Remote endpoints

https://mcp.verifox.ai/mcpstreamable-http

What it can do

Tool inventory

Tools (6)

🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
⚪verify_email(email, proxy)

Verify whether ONE email address is deliverable. Checks syntax, MX, SMTP, catch-all, disposable, free-provider and role detection, and returns a 0-100 quality score. Charges 1 Fox Credit per uncached email.

Input Schema

{
  "type": "object",
  "properties": {
    "email": {
      "type": "string",
      "format": "email",
      "description": "Email address to verify"
    },
    "proxy": {
      "type": "boolean",
      "description": "Use a SOCKS5 proxy for the SMTP check"
    }
  },
  "required": [
    "email"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢verify_emails(emails, wait)

Bulk-verify a LIST of email addresses. Submits the whole list, waits for completion, and returns one result per email (same fields as verify_email). Best for cleaning lead lists. Charges 1 Fox Credit per email. Large lists that don't finish quickly return a jobId to poll with get_job.

Input Schema

{
  "type": "object",
  "properties": {
    "emails": {
      "type": "array",
      "items": {
        "type": "string",
        "format": "email"
      },
      "minItems": 1,
      "maxItems": 100000,
      "description": "Email addresses to verify"
    },
    "wait": {
      "type": "boolean",
      "description": "Wait for results in this call (default true). Set false to just get a jobId."
    }
  },
  "required": [
    "emails"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢find_email(first_name, last_name, domain, middle_name)

Find ONE person's business email from their name and company domain. Generates ~50 permutations and SMTP-verifies each, waits for the result, and returns the best match (or not_found). Charges 10 Fox Credits per find.

Input Schema

{
  "type": "object",
  "properties": {
    "first_name": {
      "type": "string",
      "description": "Person's first name"
    },
    "last_name": {
      "type": "string",
      "description": "Person's last name"
    },
    "domain": {
      "type": "string",
      "description": "Company domain, e.g. stripe.com"
    },
    "middle_name": {
      "type": "string",
      "description": "Optional middle name for more permutations"
    }
  },
  "required": [
    "first_name",
    "last_name",
    "domain"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢find_emails(contacts, wait)

Bulk-find business emails for a LIST of contacts (name + company domain each). Submits the list, waits for completion, and returns the found email per contact. Up to 1000 contacts. Charges 10 Fox Credits per contact. Large lists that don't finish quickly return a jobId to poll with get_job.

Input Schema

{
  "type": "object",
  "properties": {
    "contacts": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "first_name": {
            "type": "string"
          },
          "last_name": {
            "type": "string"
          },
          "name": {
            "type": "string",
            "description": "Full name (alternative to first_name/last_name)"
          },
          "middle_name": {
            "type": "string"
          },
          "domain": {
            "type": "string",
            "description": "Company domain"
          }
        },
        "required": [
          "domain"
        ],
        "additionalProperties": false
      },
      "minItems": 1,
      "maxItems": 1000,
      "description": "Contacts to find emails for"
    },
    "wait": {
      "type": "boolean",
      "description": "Wait for results in this call (default true)"
    }
  },
  "required": [
    "contacts"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢get_credits

Get the current Fox Credit balance for the Verifox account tied to the API key. Free — no credits charged. Use it to check remaining balance before a big verify/find run (verify = 1 credit/email, find = 10 credits/contact).

Input Schema

{
  "type": "object",
  "properties": {},
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢get_job(job_id, type)

Check an async job started by verify_emails, find_email, or find_emails. Returns results if finished, otherwise the current status. Use the type shown in the submitting tool's response.

Input Schema

{
  "type": "object",
  "properties": {
    "job_id": {
      "type": "string",
      "description": "Job ID from verify_emails / find_email / find_emails"
    },
    "type": {
      "type": "string",
      "enum": [
        "verify_bulk",
        "find_single",
        "find_bulk"
      ],
      "description": "Job type: verify_bulk, find_single, or find_bulk"
    }
  },
  "required": [
    "job_id",
    "type"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Recommended Prompts

search_research
Search for information about [topic] using email-verifier
Expected tools: find_email
find_specific
Find [specific item] using email-verifier
Expected tools: find_email
retrieve_data
Get details about [item] from email-verifier
Expected tools: get_credits
fetch_info
Fetch [information type] using email-verifier
Expected tools: get_credits
research_workflow
Search for [topic], then get detailed information about the top results using email-verifier
Expected tools: find_emailget_credits

Community

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Evidence

Recent observations

verifiedversion not recorded6 tools
verifiedversion not recorded6 tools