# Mailboxlayer

A simple REST-based JSON API for email address validation and verification.

- **Category:** email
- **Auth:** API_KEY
- **Composio Managed App Available?** N/A
- **Tools:** 1
- **Triggers:** 0
- **Slug:** `MAILBOXLAYER`
- **Version:** 20260424_00

## Tools

### Check Email Validity

**Slug:** `MAILBOXLAYER_CHECK_EMAIL`

Tool to validate a single email address. Use when you need to check syntax, domain, SMTP, and meta-flags.