MailboxValidator Email Validation MCP Server

Email validation MCP server using MailboxValidator API to determine validity of an email address.

→ MailboxValidator/mcp-mailboxvalidator · listed on glama

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// key findings

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

✅

Open source with a license and README

Anyone can audit the code, the license is declared, and the publisher documents what it does.

🔐

You'll be asked for 1 credential: MAILBOXVALIDATOR_API_KEY

These are read from process.env at runtime. Make sure you trust where they’ll be sent.

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

🔐 secretMAILBOXVALIDATOR_API_KEY— "": "<YOUR_API_KEY>"

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 2 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/mailboxvalidator-mcp-mailboxvalidator-1omu7o)](https://m8ven.ai/mcp/mailboxvalidator-mcp-mailboxvalidator-1omu7o)

commit: 77aa42b2b2002aef7644a9df4b002917c28eddf7

code hash: 6a6cbd9a643bb76c78eaa4148466d4e98987195d27e01fd6879856fce7454000

verified: 4/18/2026, 6:19:51 PM

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