Sendmail MCP Server

Item: Sendmail MCP Server
Rating: 56
Author: M8ven

Enables AI agents to send emails through your SMTP server using Nodemailer. Supports plain text and HTML emails with automatic logging for audit and debugging.

→ u1pns/sendmail-mcp · listed on glama

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// key findings

⚠️

Known vulnerabilities in dependencies: 4 high

Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

🔐

You'll be asked for 1 credential: SMTP_PASS

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

// known CVEs in dependencies4 high5 low

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

high@modelcontextprotocol/sdk@1.23.0GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

high@modelcontextprotocol/sdk@1.23.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.23.0GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

highnodemailer@7.0.11GHSA-p6gq-j5cr-w38f

Nodemailer: Message-level raw option bypasses disableFileAccess/disableUrlAccess, enabling arbitrary file read and full-response SSRF in the delivered message

lownodemailer@7.0.11GHSA-268h-hp4c-crq3

Nodemailer: CRLF injection in Nodemailer List-* header comments allows arbitrary message header injection

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// required environment variables

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

configMAIL_FROM— "": "sender@example.com"

configSMTP_HOST— "": "smtp.example.com",

🔐 secretSMTP_PASS— "": "your_password",

configSMTP_PORT— "": "465",

configSMTP_SECURE— "": "true",

configSMTP_USER— "": "your_email@example.com",

// 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 5 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/u1pns-sendmail-mcp-1e2ghk)](https://m8ven.ai/mcp/u1pns-sendmail-mcp-1e2ghk)

commit: 59863e08a34857a29f2dbdb1d09dfec4c46dbd2d

code hash: 66e9c8590a0413365ba198029e7533bc269751553cd41691a5fd5fa717fd3f28

verified: 7/9/2026, 10:19:00 AM

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