Proton Mail (unofficial)

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About

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

Use this server

Add it to your MCP client. The catalogue lists this config verbatim from its source — it does not run, download, or vouch for the server. Review the command before you run it.

Transportstdio (runs a local command)

Env varsPROTONMAIL_USERNAME PROTONMAIL_PASSWORD PROTONMAIL_HOST PROTONMAIL_PORT PROTONMAIL_SECURE IMAP_HOST IMAP_PORT IMAP_SECURE IMAP_USERNAME IMAP_PASSWORD READONLY RESTRICT_OUTBOUND_TO_SELF ALLOW_FILE_DOWNLOAD_DIR ALLOW_EMPTY_FOLDER DEBUG

Claude Code

claude mcp add --env PROTONMAIL_USERNAME= --env PROTONMAIL_PASSWORD= --env PROTONMAIL_HOST= --env PROTONMAIL_PORT= --env PROTONMAIL_SECURE= --env IMAP_HOST= --env IMAP_PORT= --env IMAP_SECURE= --env IMAP_USERNAME= --env IMAP_PASSWORD= --env READONLY= --env RESTRICT_OUTBOUND_TO_SELF= --env ALLOW_FILE_DOWNLOAD_DIR= --env ALLOW_EMPTY_FOLDER= --env DEBUG= proton-mail-mcp -- npx proton-mail-mcp

Cursor

Add to Cursor

If the button doesn't open Cursor, use the JSON below — Cursor accepts the same mcpServers config.

VS Code

code --add-mcp '{"name":"proton-mail-mcp","command":"npx","args":["proton-mail-mcp"],"env":{"PROTONMAIL_USERNAME":"","PROTONMAIL_PASSWORD":"","PROTONMAIL_HOST":"","PROTONMAIL_PORT":"","PROTONMAIL_SECURE":"","IMAP_HOST":"","IMAP_PORT":"","IMAP_SECURE":"","IMAP_USERNAME":"","IMAP_PASSWORD":"","READONLY":"","RESTRICT_OUTBOUND_TO_SELF":"","ALLOW_FILE_DOWNLOAD_DIR":"","ALLOW_EMPTY_FOLDER":"","DEBUG":""}}'

JSON

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

Environment variables are listed by name only — fill in your own values. Entries never carry secrets.