Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Proton Mail Bridge Client

Proton Mail Bridge Client, an MCP server listed in the PlugVet directory.

Compatibility: Not stated.

Grade C

One Medium finding. Read the findings before installing.

Graded by PlugVetRubric v2

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

Rescanned at commit 4f48c2b87105.

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 34 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 34

    prepare

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST

    examples/cron/unread-alert.sh, line 18

    # curl -s -X POST -H 'Content-Type: application/json' \

    src/services/local-index-service.ts, line 754

    // from the async network fetch (collectEmailsForIndex) that happens in

    src/services/simple-imap-service.ts, line 1648

    for await (const message of client.fetch(uidSet, fetchQuery, { uid: true })) {

    Show more

    src/services/simple-imap-service.ts, line 1677

    for await (const message of client.fetch(`${startSeq}:${endSeq}`, fetchQuery)) {

    src/services/simple-imap-service.ts, line 1769

    for await (const message of client.fetch(uids, FETCH_INDEX_QUERY, { uid: true })) {

    src/services/simple-imap-service.ts, line 1778

    for await (const message of client.fetch(targetUids, fetchQuery, { uid: true })) {

    src/services/simple-imap-service.ts, line 1822

    for await (const message of client.fetch(uids, FETCH_INDEX_QUERY, { uid: true })) {

    src/services/simple-imap-service.ts, line 1846

    for await (const message of client.fetch(batch, fetchQuery, { uid: true })) {

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    src/scripts/setup-claude-desktop.ts, line 255

    process.env.PROTONMAIL_PASSWORD || "",

    src/scripts/check-claude-desktop.ts, line 133

    hasEnvConfig: Boolean(entry?.env && typeof entry.env === "object" && !Array.isArray(entry.env)),

    src/scripts/install-claude-desktop.ts, line 436

    typeof (existingServerConfig as { env?: unknown }).env === "object"

    Show more

    .gitignore, line 10

    .env

    .gitignore, line 11

    .env.local

  • Agent instructions

    Pass

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

  • Obfuscation

    Note

    a file was over the read cap and was not fully read.

    OBFUSCATION_FILE_OVER_READ_CAP

    CHANGELOG.md, line 1

    # Changelog

    src/index.ts, line 1

    #!/usr/bin/env node

    src/services/simple-imap-service.ts, line 1

    import { existsSync, mkdirSync, realpathSync } from "node:fs";

  • 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 4f48c2b87105. runs a script at install time. can reach a host that is not written as a fixed address. reads a credential or environment file. a file was over the read cap and was not fully read.

Date and source

Date checked:

View source

github.com

Commit graded: 4f48c2b87105ae8d133589b975391fe0271ce701

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Read how this letter is chosen