Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Mcp Email Server

Full-featured, multi-account MCP email server for Windows, macOS, and Linux, read, search, organize, and send email via IMAP and SMTP.

Compatibility: Not stated.

Grade B

Minor issues only, no Medium or High. Worth a quick look at the findings below 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 2171db991fc2, unchanged since the check below.

PERMISSION_DELETE_FILES NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV SECRETS_ENV_READ OBFUSCATION_FILE_OVER_READ_CAP

Why this grade

  • PERMISSION_DELETE_FILES Low

    Contains a call that can delete files.

    dev/build_frontend.py, line 143 shutil.rmtree(backup)

  • NETWORK_NO_FIXED_HOST Low

    Makes a network call whose host is not written as a fixed address.

    mcp_email_server/web_ui/static/assets/index-DJVcj3N9.js, line 1 (function(){const m=document.createElement("link").relList;if(m&&m.supports&&m.supports("modulepreload"))return;for(const E of document.querySelectorAll('link[rel="modulepreload"]'

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    dev/verify_container.py, line 13 "/app/.env",

  • SECRETS_ENV_READ Note

    Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.

    mcp_email_server/cli.py, line 1409 env_override = os.environ.get("MCP_EMAIL_SERVER_CREDENTIAL_STORAGE")

  • OBFUSCATION_FILE_OVER_READ_CAP Note

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

    uv.lock, line 1 version = 1

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

    Concern

    can delete files.

    PERMISSION_DELETE_FILES

    dev/build_frontend.py, line 143

    shutil.rmtree(backup)

    dev/build_frontend.py, line 148

    shutil.rmtree(backup)

    dev/build_frontend.py, line 160

    subprocess.run([npm, "ci"], cwd=FRONTEND, check=True) # noqa: S603 - maintainer tool

    Show more

    dev/build_frontend.py, line 161

    subprocess.run([npm, "run", "check"], cwd=FRONTEND, check=True) # noqa: S603 - maintainer tool

    dev/build_frontend.py, line 162

    subprocess.run([npm, "run", "build"], cwd=FRONTEND, check=True) # noqa: S603 - maintainer tool

    dev/verify_container.py, line 35

    process = subprocess.run( # noqa: S603 - fixed Docker executable with maintainer-supplied image tag

  • Install and update

    Pass

    No install-time script found, and dependencies are pinned or absent.

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST

    mcp_email_server/web_ui/static/assets/index-DJVcj3N9.js, line 1

    (function(){const m=document.createElement("link").relList;if(m&&m.supports&&m.supports("modulepreload"))return;for(const E of document.querySelectorAll('link[rel="modulepreload"]'

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    dev/verify_container.py, line 13

    "/app/.env",

    mcp_email_server/cli.py, line 1409

    env_override = os.environ.get("MCP_EMAIL_SERVER_CREDENTIAL_STORAGE")

    mcp_email_server/config.py, line 437

    password = os.getenv("MCP_EMAIL_SERVER_PASSWORD")

    Show more

    mcp_email_server/config.py, line 472

    smtp_password=os.getenv("MCP_EMAIL_SERVER_SMTP_PASSWORD", password),

    mcp_email_server/config.py, line 474

    imap_password=os.getenv("MCP_EMAIL_SERVER_IMAP_PASSWORD", password),

    mcp_email_server/config.py, line 554

    override = os.getenv("MCP_EMAIL_SERVER_CREDENTIAL_STORAGE")

    mcp_email_server/config.py, line 1026

    override = os.getenv("MCP_EMAIL_SERVER_CREDENTIAL_STORAGE")

    mcp_email_server/adapters/management.py, line 527

    base = os.getenv("MCP_EMAIL_SERVER_PASSWORD")

    .gitignore, line 98

    # Environments

    docs/security.md, line 460

    repository `.env`, `config.toml`, database, source, test, or cache files. Keep

  • 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

    uv.lock, line 1

    version = 1

    mcp_email_server/web_ui/static/assets/index-DJVcj3N9.js, line 1

    (function(){const m=document.createElement("link").relList;if(m&&m.supports&&m.supports("modulepreload"))return;for(const E of document.querySelectorAll('link[rel="modulepreload"]'

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

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Note

Hygiene check of commit 2171db991fc2. can delete files. 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: 2171db991fc23f0953e7fd64d55d2f915750b1d9

This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.

Read how this letter is chosen