protonmail-mcp

Enables AI clients to interact with ProtonMail accounts through the Proton Bridge using SMTP and IMAP protocols. Provides email management capabilities via secure local bridge connections.

→ darkroomdevs/protonmail-mcp · listed on glama

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// key findings

⚠️

Known vulnerabilities in dependencies: 1 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: PROTONMAIL_PASSWORD

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

// known CVEs in dependencies1 high4 low

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

highnodemailer@8.0.5GHSA-p6gq-j5cr-w38f

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

lownodemailer@8.0.5GHSA-268h-hp4c-crq3

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

lownodemailer@8.0.5GHSA-r7g4-qg5f-qqm2

Nodemailer: Improper TLS Certificate Validation in OAuth2 Token Fetch Enables Credential Interception

lownodemailer@8.0.5GHSA-wqvq-jvpq-h66f

Nodemailer jsonTransport bypasses disableFileAccess and disableUrlAccess during message normalization

lowmailparser@3.7.0GHSA-7gmj-h9xc-mcxc

mailparser vulnerable to Cross-site Scripting

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.

configIMAP_HOST— No 127.0.0.1 Bridge IMAP host

configIMAP_PORT— No 1143 Bridge IMAP port

🔐 secretPROTONMAIL_PASSWORD— "": "bridge-app-password"

configPROTONMAIL_USERNAME— "": "your@protonmail.com",

configSMTP_HOST— No 127.0.0.1 Bridge SMTP host

configSMTP_PORT— No 1025 Bridge SMTP port

// 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 3 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/darkroomdevs-protonmail-mcp-13qzgy)](https://m8ven.ai/mcp/darkroomdevs-protonmail-mcp-13qzgy)

commit: 49fa5e298b7cb60d35a8ae8ac9b48975f0d9b478

code hash: 19c779c3cd9f3f744c87613f3e2c34522cd0833578c3ab229efbe8cb164fbc7d

verified: 7/4/2026, 9:17:54 AM

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