# mcp-mailboxvalidator

> mcp-mailboxvalidator — mailboxvalidator-mcp-mailboxvalidator. Use this tool when you need to validate email addresses and verify their authenticity. It solves problems of email bounce backs and spam by checking if an email address exists and can receive emails, using the MailboxValidator API. The tool takes email addresses as input and returns validation results, making it ideal for use cases where email verification is crucial, such as email marketing campaigns or user registration processes.

Canonical page: https://skillsregistry.net/skills/mailboxvalidator-mcp-mailboxvalidator  
JSON: https://api.skillsregistry.net/v1/skills/mailboxvalidator-mcp-mailboxvalidator

## Description

Email validation MCP server using MailboxValidator API

## Trust

- **Trust score (0–1):** 0.99
- **Verification tier:** verified
- **Last scanned:** 2026-09-19

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **Category:** communication
- **Updated:** 2026-09-21

## Source

- **Source listing:** [GitHub](https://github.com/MailboxValidator/mcp-mailboxvalidator)

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "mailboxvalidator-mcp-mailboxvalidator"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/mailboxvalidator-mcp-mailboxvalidator` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/mailboxvalidator-mcp-mailboxvalidator/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt