SERVER

Proton Mail (unofficial)

Rank #30,974

io.github.sethbang/proton-mail-mcp

Unofficial Proton Mail MCP — send, read, search & organize email over SMTP and IMAP

2 versions

6 GitHub stars

by sethbang (2 servers)View repository ↗

Listed & last published

May 30, 2026

PURPOSE

What you can do with Proton Mail (unofficial)

Proton Mail (unofficial) is a Model Context Protocol (MCP) server published by sethbang. It ranks #30,974 of 144,396 active servers on MCP Toplist, and its repository has 6 GitHub stars. Proton Mail (unofficial) is listed across 4 registries — Official MCP, Glama, PulseMCP and mcp.so, with 2 tracked versions. It was first listed on May 30, 2026 and most recently updated on May 30, 2026.

Not verifiedMCP Toplist has not yet written a checked profile for this server, so the paragraph above is assembled from registry data only. The repository README is the authority on what it does.

CAPABILITIES AND LIMITATIONS

What Proton Mail (unofficial) can and cannot do

Not verifiedMCP Toplist has not catalogued this server's tools or limitations. The repository README lists them.

REQUIREMENTS

What you need before using Proton Mail (unofficial)

DeclaredAPI keyCredentials declared

The registry listing declares required configuration before first use — typically an API key, token or connection string set via environment variables.

Declared by Glama, last synced Oct 16, 2026. Not independently verified by MCP Toplist.

Declared in the registry install config

PROTONMAIL_USERNAME · required
PROTONMAIL_PASSWORD · required
PROTONMAIL_HOST · optional
PROTONMAIL_PORT · optional
PROTONMAIL_SECURE · optional
IMAP_HOST · optional
IMAP_PORT · optional
IMAP_SECURE · optional
IMAP_USERNAME · optional
IMAP_PASSWORD · optional
READONLY · optional
RESTRICT_OUTBOUND_TO_SELF · optional
ALLOW_FILE_DOWNLOAD_DIR · optional
ALLOW_EMPTY_FOLDER · optional
DEBUG · optional

INSTALLATION AND FIRST TASK

Connect Proton Mail (unofficial) and confirm it works

npm package

claude mcp add proton-mail-mcp -e "PROTONMAIL_USERNAME=<your PROTONMAIL_USERNAME>" -e "PROTONMAIL_PASSWORD=<your PROTONMAIL_PASSWORD>" -e "PROTONMAIL_HOST=<your PROTONMAIL_HOST>" -e "PROTONMAIL_PORT=<your PROTONMAIL_PORT>" -e "PROTONMAIL_SECURE=<your PROTONMAIL_SECURE>" -e "IMAP_HOST=<your IMAP_HOST>" -e "IMAP_PORT=<your IMAP_PORT>" -e "IMAP_SECURE=<your IMAP_SECURE>" -e "IMAP_USERNAME=<your IMAP_USERNAME>" -e "IMAP_PASSWORD=<your IMAP_PASSWORD>" -e "READONLY=<your READONLY>" -e "RESTRICT_OUTBOUND_TO_SELF=<your RESTRICT_OUTBOUND_TO_SELF>" -e "ALLOW_FILE_DOWNLOAD_DIR=<your ALLOW_FILE_DOWNLOAD_DIR>" -e "ALLOW_EMPTY_FOLDER=<your ALLOW_EMPTY_FOLDER>" -e "DEBUG=<your DEBUG>" -- npx -y proton-mail-mcp

Replace each placeholder with your own value before saving.

npm package

[mcp_servers.proton-mail-mcp]
command = "npx"
args = ["-y", "proton-mail-mcp"]

[mcp_servers.proton-mail-mcp.env]
PROTONMAIL_USERNAME = "<your PROTONMAIL_USERNAME>"
PROTONMAIL_PASSWORD = "<your PROTONMAIL_PASSWORD>"
PROTONMAIL_HOST = "<your PROTONMAIL_HOST>"
PROTONMAIL_PORT = "<your PROTONMAIL_PORT>"
PROTONMAIL_SECURE = "<your PROTONMAIL_SECURE>"
IMAP_HOST = "<your IMAP_HOST>"
IMAP_PORT = "<your IMAP_PORT>"
IMAP_SECURE = "<your IMAP_SECURE>"
IMAP_USERNAME = "<your IMAP_USERNAME>"
IMAP_PASSWORD = "<your IMAP_PASSWORD>"
READONLY = "<your READONLY>"
RESTRICT_OUTBOUND_TO_SELF = "<your RESTRICT_OUTBOUND_TO_SELF>"
ALLOW_FILE_DOWNLOAD_DIR = "<your ALLOW_FILE_DOWNLOAD_DIR>"
ALLOW_EMPTY_FOLDER = "<your ALLOW_EMPTY_FOLDER>"
DEBUG = "<your DEBUG>"

Add to ~/.codex/config.toml. Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "proton-mail-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "proton-mail-mcp"
      ],
      "env": {
        "PROTONMAIL_USERNAME": "<your PROTONMAIL_USERNAME>",
        "PROTONMAIL_PASSWORD": "<your PROTONMAIL_PASSWORD>",
        "PROTONMAIL_HOST": "<your PROTONMAIL_HOST>",
        "PROTONMAIL_PORT": "<your PROTONMAIL_PORT>",
        "PROTONMAIL_SECURE": "<your PROTONMAIL_SECURE>",
        "IMAP_HOST": "<your IMAP_HOST>",
        "IMAP_PORT": "<your IMAP_PORT>",
        "IMAP_SECURE": "<your IMAP_SECURE>",
        "IMAP_USERNAME": "<your IMAP_USERNAME>",
        "IMAP_PASSWORD": "<your IMAP_PASSWORD>",
        "READONLY": "<your READONLY>",
        "RESTRICT_OUTBOUND_TO_SELF": "<your RESTRICT_OUTBOUND_TO_SELF>",
        "ALLOW_FILE_DOWNLOAD_DIR": "<your ALLOW_FILE_DOWNLOAD_DIR>",
        "ALLOW_EMPTY_FOLDER": "<your ALLOW_EMPTY_FOLDER>",
        "DEBUG": "<your DEBUG>"
      }
    }
  }
}

Add to claude_desktop_config.json (Settings → Developer → Edit Config). Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "proton-mail-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "proton-mail-mcp"
      ],
      "env": {
        "PROTONMAIL_USERNAME": "<your PROTONMAIL_USERNAME>",
        "PROTONMAIL_PASSWORD": "<your PROTONMAIL_PASSWORD>",
        "PROTONMAIL_HOST": "<your PROTONMAIL_HOST>",
        "PROTONMAIL_PORT": "<your PROTONMAIL_PORT>",
        "PROTONMAIL_SECURE": "<your PROTONMAIL_SECURE>",
        "IMAP_HOST": "<your IMAP_HOST>",
        "IMAP_PORT": "<your IMAP_PORT>",
        "IMAP_SECURE": "<your IMAP_SECURE>",
        "IMAP_USERNAME": "<your IMAP_USERNAME>",
        "IMAP_PASSWORD": "<your IMAP_PASSWORD>",
        "READONLY": "<your READONLY>",
        "RESTRICT_OUTBOUND_TO_SELF": "<your RESTRICT_OUTBOUND_TO_SELF>",
        "ALLOW_FILE_DOWNLOAD_DIR": "<your ALLOW_FILE_DOWNLOAD_DIR>",
        "ALLOW_EMPTY_FOLDER": "<your ALLOW_EMPTY_FOLDER>",
        "DEBUG": "<your DEBUG>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). Replace each placeholder with your own value before saving.

npm package

{
  "servers": {
    "proton-mail-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "proton-mail-mcp"
      ],
      "env": {
        "PROTONMAIL_USERNAME": "<your PROTONMAIL_USERNAME>",
        "PROTONMAIL_PASSWORD": "<your PROTONMAIL_PASSWORD>",
        "PROTONMAIL_HOST": "<your PROTONMAIL_HOST>",
        "PROTONMAIL_PORT": "<your PROTONMAIL_PORT>",
        "PROTONMAIL_SECURE": "<your PROTONMAIL_SECURE>",
        "IMAP_HOST": "<your IMAP_HOST>",
        "IMAP_PORT": "<your IMAP_PORT>",
        "IMAP_SECURE": "<your IMAP_SECURE>",
        "IMAP_USERNAME": "<your IMAP_USERNAME>",
        "IMAP_PASSWORD": "<your IMAP_PASSWORD>",
        "READONLY": "<your READONLY>",
        "RESTRICT_OUTBOUND_TO_SELF": "<your RESTRICT_OUTBOUND_TO_SELF>",
        "ALLOW_FILE_DOWNLOAD_DIR": "<your ALLOW_FILE_DOWNLOAD_DIR>",
        "ALLOW_EMPTY_FOLDER": "<your ALLOW_EMPTY_FOLDER>",
        "DEBUG": "<your DEBUG>"
      }
    }
  }
}

Save as .vscode/mcp.json in your workspace. Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "proton-mail-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "proton-mail-mcp"
      ],
      "env": {
        "PROTONMAIL_USERNAME": "<your PROTONMAIL_USERNAME>",
        "PROTONMAIL_PASSWORD": "<your PROTONMAIL_PASSWORD>",
        "PROTONMAIL_HOST": "<your PROTONMAIL_HOST>",
        "PROTONMAIL_PORT": "<your PROTONMAIL_PORT>",
        "PROTONMAIL_SECURE": "<your PROTONMAIL_SECURE>",
        "IMAP_HOST": "<your IMAP_HOST>",
        "IMAP_PORT": "<your IMAP_PORT>",
        "IMAP_SECURE": "<your IMAP_SECURE>",
        "IMAP_USERNAME": "<your IMAP_USERNAME>",
        "IMAP_PASSWORD": "<your IMAP_PASSWORD>",
        "READONLY": "<your READONLY>",
        "RESTRICT_OUTBOUND_TO_SELF": "<your RESTRICT_OUTBOUND_TO_SELF>",
        "ALLOW_FILE_DOWNLOAD_DIR": "<your ALLOW_FILE_DOWNLOAD_DIR>",
        "ALLOW_EMPTY_FOLDER": "<your ALLOW_EMPTY_FOLDER>",
        "DEBUG": "<your DEBUG>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json. Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "proton-mail-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "proton-mail-mcp"
      ],
      "env": {
        "PROTONMAIL_USERNAME": "<your PROTONMAIL_USERNAME>",
        "PROTONMAIL_PASSWORD": "<your PROTONMAIL_PASSWORD>",
        "PROTONMAIL_HOST": "<your PROTONMAIL_HOST>",
        "PROTONMAIL_PORT": "<your PROTONMAIL_PORT>",
        "PROTONMAIL_SECURE": "<your PROTONMAIL_SECURE>",
        "IMAP_HOST": "<your IMAP_HOST>",
        "IMAP_PORT": "<your IMAP_PORT>",
        "IMAP_SECURE": "<your IMAP_SECURE>",
        "IMAP_USERNAME": "<your IMAP_USERNAME>",
        "IMAP_PASSWORD": "<your IMAP_PASSWORD>",
        "READONLY": "<your READONLY>",
        "RESTRICT_OUTBOUND_TO_SELF": "<your RESTRICT_OUTBOUND_TO_SELF>",
        "ALLOW_FILE_DOWNLOAD_DIR": "<your ALLOW_FILE_DOWNLOAD_DIR>",
        "ALLOW_EMPTY_FOLDER": "<your ALLOW_EMPTY_FOLDER>",
        "DEBUG": "<your DEBUG>"
      }
    }
  }
}

Replace each placeholder with your own value before saving.

First successful task

After adding the config, ask your client to list this server's tools. A tool list confirms the connection; an empty list or an error means the server did not start or needs credentials.

ALTERNATIVES

When to choose another server

Other servers by sethbang

Universal Screenshot MCP#5,252

View all sethbang servers →

No task-specific alternatives are catalogued for Proton Mail (unofficial)yet; the list above is its publisher's other servers.

MAINTENANCE AND EVIDENCE

What changed, and when this was checked

First listed: May 30, 2026
Latest version published: May 30, 2026
Version history: 2 versions tracked (below)
Requirements evidence: Declared by Glama, last synced Oct 16, 2026. Not independently verified by MCP Toplist.
Profile checked: Not yet — purpose, capabilities and requirements above come from registry data only
Ranking data as of: Oct 16, 2026

Registry sightings

Glama ↗listed since Jun 1, 2026 · still listed
PulseMCP ↗listed since Jun 4, 2026 · still listed
Official MCP ↗listed since Jul 24, 2026 · still listed
mcp.so ↗listed since Aug 26, 2026 · still listed

Do you maintain Proton Mail (unofficial)? to correct or enrich this profile.

VERSIONS

Available versions (2)

Version	Published
1.0.2	May 30, 2026
1.0.1	May 30, 2026

STANDING

#30,974of 144,396 active serversTop 25%

Ranks ahead of 113,422 of 144,396 servers on MCP Toplist.

BADGE

Show your rank

Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.

Markdown

[![MCP Toplist](https://mcptoplist.com/badge/io.github.sethbang%2Fproton-mail-mcp.svg)](https://mcptoplist.com/server/io.github.sethbang%2Fproton-mail-mcp)

HTML

<a href="https://mcptoplist.com/server/io.github.sethbang%2Fproton-mail-mcp"><img src="https://mcptoplist.com/badge/io.github.sethbang%2Fproton-mail-mcp.svg" alt="MCP Toplist: Top 25% of 144,396" /></a>

Variants: append ?metric=score or ?metric=stars to the image URL.

FAQ

Frequently asked questions

Who maintains Proton Mail (unofficial)?: Proton Mail (unofficial) is maintained by sethbang, which publishes 2 MCP servers (9 total versions) tracked on MCP Toplist.
Is Proton Mail (unofficial) listed on the Official MCP Registry?: Yes — Proton Mail (unofficial) is listed on the Official MCP Registry, alongside Glama, PulseMCP and mcp.so.
How many versions does Proton Mail (unofficial) have?: MCP Toplist tracks 2 versions of Proton Mail (unofficial), most recently published on May 30, 2026.
Where can I find the source code for Proton Mail (unofficial)?: The source code for Proton Mail (unofficial) is hosted at github.com/sethbang/proton-mail-mcp.

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