# Mailboxlayer — MCP server on mcp.ai
> Connect your Mailboxlayer account and use 1 tools for email straight from your AI agent. Connect with your own API key. A simple REST-based JSON API for email address validation and verification.

By: mcp.ai · official
Page: https://mcp.ai/mailboxlayer

## Connect (MCP protocol)
Remote MCP endpoint (HTTP, streamable): https://api.mcp.ai/p_mailboxlayer?ms=1787293740000
Add it as a custom/remote MCP connector, then authenticate when prompted.

## REST API (no MCP client required)
Every tool is also a REST endpoint, authed with a workspace API key.
Discover: GET https://api.mcp.ai/api/mailboxlayer/_endpoints   # public; lists every endpoint
Call:     POST https://api.mcp.ai/api/mailboxlayer/<endpoint>
  Authorization: Bearer sk_live_…   # create one at https://mcp.ai/settings/api-keys
  Content-Type: application/json
  Body: { …args }   →   { "ok": true, "tool": "<id>", "result": { … } }

## Developer docs
How to use (MCP or REST), markdown: https://mcp.ai/mailboxlayer/skill.md
Postman collection (v2.1): https://mcp.ai/mailboxlayer/postman.json

## Tools
- mailboxlayer_check_email(mx?: integer, free?: integer, role?: integer, smtp?: integer, email: string, format?: integer, catch_all?: integer, access_key: string, disposable?: integer) — Tool to validate a single email address. Use when you need to check syntax, domain, SMTP, and meta-flags.

## Example prompts
- "What can I do in Mailboxlayer?"
- "Show me a summary of my Mailboxlayer account"

## Links
Docs: https://mcp.ai/docs/mcps/mailboxlayer
Website: https://mcp.ai/mcps/mailboxlayer