Sidemail

Item: Sidemail
Rating: 68
Author: M8ven

Sidemail.io's official MCP Server. Provides Model Context Protocol (MCP) integration for Sidemail.io, enabling programmatic access to Sidemail's transactional emails, contacts, domains, and Messenger features for product updates and newsletters via MCP agent mode (in VS Code, Claude, Cursor and other MCP clients).

→ sidemail/sidemail-mcp-server · listed on mcp_so

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// key findings

⚠️

Known vulnerabilities in dependencies: 2 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.

✅

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: SIDEMAIL_API_KEY

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

// known CVEs in dependencies2 high

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

high@modelcontextprotocol/sdk@1.8.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.8.0GHSA-w48q-cv73-mx4w

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

Depend on this server? Get alerted when its CVEs change.Watch this server free →

// required environment variables

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

configSIDEMAIL_API_BASE

🔐 secretSIDEMAIL_API_KEY— "": "${input:sidemail-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 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/sidemail-sidemail-mcp-server-shk3bt)](https://m8ven.ai/mcp/sidemail-sidemail-mcp-server-shk3bt)

commit: f54f2fb65739b17a87703fb80ea5a747ff411114

code hash: 06911ff9248c7e04b536b423fd743ff6e8ec8f14d46a7bc40cfdaf88ae2e3a95

verified: 6/16/2026, 1:07:19 PM

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