Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Proton Mail Mcp

A Model Context Protocol (MCP) server that gives AI assistants full access to your Proton Mail account -- send, read, search, and organize email over SMTP and IMAP.

Compatibility: Not stated.

Grade C

One Medium finding. Read the report before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

INSTALL_LIFECYCLE_HOOK

Why this grade

  • INSTALL_LIFECYCLE_HOOK Medium

    A package install hook (preinstall, install, postinstall or prepare) runs a script.

    package.json, line 41 prepare

Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.

Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.

What was checked

Plain notes from the hygiene checks.

  • Permissions

    Pass

    No shell or command execution found, and no extra permission was declared.

  • Install and update

    Concern

    runs a script at install time.

    INSTALL_LIFECYCLE_HOOK

    package.json, line 41

    prepare

  • Network

    Concern

    can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST

    src/imap-service.ts, line 480

    for await (const msg of client.fetch(fetchRange, { uid: true, envelope: true, flags: true }, { uid: true })) {

    src/imap-service.ts, line 509

    for await (const msg of client.fetch(

    src/imap-service.ts, line 760

    // For attachment filters, do a single combined fetch (envelope + flags + bodyStructure)

    Show more

    src/imap-service.ts, line 765

    for await (const msg of client.fetch(

    src/imap-service.ts, line 1031

    for await (const msg of client.fetch(uids.join(","), { uid: true }, { uid: true })) {

    src/imap-service.ts, line 1670

    for await (const msg of client.fetch(fetchRange, { uid: true, envelope: true, flags: true }, { uid: true })) {

    src/imap-service.ts, line 1810

    for await (const m of client.fetch(range, { uid: true, flags: true }, { uid: true })) {

    src/imap-service.ts, line 1881

    for await (const m of client.fetch(toUpdate.join(","), { uid: true, envelope: true }, { uid: true })) {

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    src/imap-service.ts, line 1564

    for (const env of envelopes) merged.push({ ...env, folder });

    src/index.ts, line 42

    const PROTONMAIL_PASSWORD = process.env.PROTONMAIL_PASSWORD;

    src/index.ts, line 74

    const IMAP_PASSWORD = process.env.IMAP_PASSWORD || PROTONMAIL_PASSWORD;

    Show more

    .gitignore, line 16

    # Environment variables

    .gitignore, line 18

    !.env.example

    .gitignore, line 19

    .env.local

    .gitignore, line 20

    .env.development.local

    .gitignore, line 21

    .env.test.local

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Pass

    No encoded or minified payload found.

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Get the full report on this tool, £49

Note

Hygiene check of commit 4cf20a67f5fb. runs a script at install time. can reach a host that is not written as a fixed address. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: 4cf20a67f5fb64f45a63891b5247a38cea77361f

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Read how this letter is chosen