Proton Workflow Connector

Name: Proton Workflow Connector
Author: NtrpyDev

de NtrpyDevversión 1.3.0i★ –iSe ejecuta en tu computadora

Nombre en el registroio.github.NtrpyDev/proton-workflow-connector

Instalar

Resumen

Descripción del creador (original en inglés)

Unofficial self-hosted MCP connector for Proton Mail Bridge and SimpleLogin.

Los tres pilares de PopNx MCP

Estos tres nunca se combinan en una sola puntuación: las opiniones, las mediciones y la popularidad son cosas distintas.

Opinión de usuariosiAún no hay reseñasLas reseñas se abrirán junto con las cuentas en una etapa posterior
Nuestras revisiones básicasi1 de 1 superadasRevisado con información pública; el código aún no se ha escaneado
UsoiAún sin medir★ –

Qué puedes hacer con él

Todavía no escribimos un resumen sencillo para este. Abajo están los datos que leímos del registro.

Conexión: Se ejecuta en tu computadora
Transporte: stdio
Categoría: Otros
Debes completar: PROTON_BRIDGE_USERNAME, PROTON_BRIDGE_PASSWORD, PROTON_BRIDGE_EMAIL, SIMPLELOGIN_API_KEY

Instalación

Elige la app de IA que usas y copia la configuración.

Antes de instalar

Revisiones básicas: 1 de 1 superadas
Se ejecuta en tu computadora con los permisos de tu usuario (archivos, red, apps).
Debes completar tú: PROTON_BRIDGE_USERNAME, PROTON_BRIDGE_PASSWORD, PROTON_BRIDGE_EMAIL, SIMPLELOGIN_API_KEY

Los valores marcados como secretos son llaves de tu cuenta. Nunca los compartas ni los pegues en un chat.

Necesitas

PyPIuv de Python instalado (para el comando uvx)

¿Qué app usas?

ClaudeClaude CodeCursorVS CodeChatGPT

Elige tu app arriba. La recordamos, así que la próxima vez el botón dirá “Instalar en …”.

Abre Claude Desktop → Settings → Developer → Edit Config y pega esto en claude_desktop_config.json

{
  "mcpServers": {
    "proton-workflow-connector": {
      "command": "uvx",
      "args": [
        "proton-workflow-connector"
      ],
      "env": {
        "PROTON_BRIDGE_USERNAME": "your-value",
        "PROTON_BRIDGE_PASSWORD": "your-value",
        "PROTON_BRIDGE_EMAIL": "your-value",
        "SIMPLELOGIN_API_KEY": "your-value"
      }
    }
  }
}

Ejecuta esto en tu terminal

claude mcp add proton-workflow-connector --env PROTON_BRIDGE_USERNAME=your-value --env PROTON_BRIDGE_PASSWORD=your-value --env PROTON_BRIDGE_EMAIL=your-value --env SIMPLELOGIN_API_KEY=your-value -- uvx proton-workflow-connector

Completa los valores vacíos antes de ejecutarlo.

Abrir en Cursor

O copia la configuración tú

Pégalo en .cursor/mcp.json de tu proyecto, o en ~/.cursor/mcp.json

{
  "mcpServers": {
    "proton-workflow-connector": {
      "command": "uvx",
      "args": [
        "proton-workflow-connector"
      ],
      "env": {
        "PROTON_BRIDGE_USERNAME": "your-value",
        "PROTON_BRIDGE_PASSWORD": "your-value",
        "PROTON_BRIDGE_EMAIL": "your-value",
        "SIMPLELOGIN_API_KEY": "your-value"
      }
    }
  }
}

Tu navegador te pide permiso para abrir la app; luego la app muestra la configuración y te pide confirmar. Los valores de las claves quedan vacíos para que los completes tú.

Abrir en VS Code

O copia la configuración tú

Pégalo en .vscode/mcp.json de tu proyecto

{
  "servers": {
    "proton-workflow-connector": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "proton-workflow-connector"
      ],
      "env": {
        "PROTON_BRIDGE_USERNAME": "your-value",
        "PROTON_BRIDGE_PASSWORD": "your-value",
        "PROTON_BRIDGE_EMAIL": "your-value",
        "SIMPLELOGIN_API_KEY": "your-value"
      }
    }
  }
}

Tu navegador te pide permiso para abrir la app; luego la app muestra la configuración y te pide confirmar. Los valores de las claves quedan vacíos para que los completes tú.

Este se ejecuta en tu computadora, y ChatGPT solo puede conectarse a servidores en internet. Elige otra app.

Tu elección se guarda en una cookie en este dispositivo; no necesitas cuenta.

Valores que debes completar

PROTON_BRIDGE_USERNAME obligatorio env
Bridge IMAP/SMTP username (from the Bridge app)
PROTON_BRIDGE_PASSWORD secreto obligatorio env
Bridge-generated password (never your Proton account password)
PROTON_BRIDGE_EMAIL obligatorio env
Primary Proton address served by Bridge
SIMPLELOGIN_API_KEY secreto env
SimpleLogin API key; omit to disable alias tools

Esta configuración se genera a partir de la ficha del creador en el registro. Si el README dice otra cosa, sigue el README.

Qué puede hacer

Se ejecuta en tu computadora; la lista de herramientas aparece en tu app de IA después de instalarlo.

Revisiones básicasi

Revisamos información que cualquiera puede ver; no hemos leído el código. Las revisiones que no aplican no se cuentan. · Revisado el 8 nov 2026

✓ Superada
El creador coincide con el repo
El nombre en el registro se verificó con la cuenta de GitHub NtrpyDev, dueña del repo
… Aún sin revisar
Sigue en mantenimiento
Todavía no hemos leído este repo en GitHub
… Aún sin revisar
Tiene licencia
Todavía no hemos leído este repo en GitHub
– No aplica
El endpoint responde
Este se ejecuta en tu computadora; no hay endpoint en internet
– No aplica
Inicio de sesión con OAuth
Se ejecuta en tu computadora y usa ajustes locales en su lugar
… Aún sin revisar
Sin instrucciones ocultas en las descripciones de herramientas
Se ejecuta en tu computadora; solo podemos leer listas de herramientas de endpoints en internet

Comparado con otros en Otrosi

Más estrellas que el 0% de los otros 18365 servidores de esta categoría
Publicado en el registro más recientemente que el 13% de los otros 18365 servidores de esta categoría
Revisiones básicas iguales o mejores que el 100% de los otros 18365 servidores de esta categoría

Comparado con todos los servidores activos de esta categoría en el registro. Las estrellas solo cuentan cuando quien lo publica es dueño del repo.

Preguntas frecuentes

¿Es seguro Proton Workflow Connector?

Superó 1 de 1 revisiones básicas aplicables. No hemos leído el código. Antes de agregar una clave o un token, revisa qué acceso pide el servidor y usa una clave que tenga solo los permisos que necesitas.

¿Qué claves o códigos necesita?

Debes completar: PROTON_BRIDGE_USERNAME, PROTON_BRIDGE_PASSWORD, PROTON_BRIDGE_EMAIL, SIMPLELOGIN_API_KEY

¿Se ejecuta en mi computadora o en la nube?

Se ejecuta en tu computadora. Tu app de IA lo inicia cuando hace falta, y los datos no pasan por los servidores del creador (a menos que el propio servidor llame a un servicio en línea).

¿Sigue en mantenimiento?

El repo de GitHub cambió por última vez –, y la última versión (1.3.0) llegó al registro hace 4 meses.

¿Qué apps pueden usarlo?

Las apps compatibles con MCP, como Claude Desktop, Claude Code, Cursor y VS Code. También necesitas Python (uv) en tu computadora.

¿Qué puedo usar en su lugar?

En la misma categoría: Spec Driven Development, Remote Desktop Commander, Funooy Krillion Reference

Alternativas

Servidores de la misma categoría hechos por otros creadores, ordenados por estrellas.

Cómo leer una tarjeta:★ Estrellas de GitHubiTres pilares: reseñas · revisiones · usoiActualizado = fecha en que se publicó la última versión en el registroi

Spec Driven Development

de formulahendry

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

Se ejecuta en tu computadora★ 440MITActualizado hace 14 meses

Instalar

Remote Desktop Commander

de desktop-commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Se ejecuta en la nube★ 211Actualizado anteayer

Instalar

Funooy Krillion Reference

de funooy.com

Funooy trivia references in six languages, with rules and fixed scoring. No daily spoilers.

Se ejecuta en la nubeActualizado hoy

Instalar

README del creador

Abrir el README

Copiado tal cual del repo del creador. PopNx MCP no lo ha revisado ni lo respalda. Se quitaron HTML, imágenes y scripts. Los enlaces llevan fuera de este sitio.

Proton Workflow Connector

Proton Workflow Connector (PWC) is a self-hosted MCP connector for reading, sending, organizing, and automating Proton Mail through Proton Mail Bridge. It works with any MCP client or local agent runtime that can launch a stdio server or call a Streamable HTTP MCP endpoint. SimpleLogin support is optional.

This is an unofficial project. It is not affiliated with, endorsed by, or sponsored by Proton AG. The connector uses Bridge-generated IMAP/SMTP credentials. It does not accept Proton account passwords or store Proton login sessions.

Quick start · Example workflows · Capabilities · Automations · Security · Documentation · Buy Me a Coffee

Why use it?

Use one local server for the mail work agents usually have to piece together:

Search, read, send, reply, forward, draft, label, archive, and download attachments through 53 Proton Mail tools.
Require confirmation for destructive tools, preview sends and destructive operations with dry_run, sanitize outbound HTML by default, bound bulk operations, and allow only configured sender addresses.
React to new mail or SimpleLogin aliases through MCP polling or a background watcher that can call a webhook, append JSONL, or run a command.
Add 13 SimpleLogin tools when you want alias, contact, and mailbox management.
Connect over stdio, localhost Streamable HTTP, or OAuth-protected hosted HTTP.

The server exposes 68 tools in total. See the complete tool reference.

How it works

PWC is an MCP server. Your client starts it over stdio or connects to it over Streamable HTTP.

The connector talks to Proton Mail Bridge over local IMAP/SMTP. Bridge must be installed, signed in, and running on the same machine as the connector. One connector process serves one Bridge account.

SimpleLogin is optional. If SIMPLELOGIN_API_KEY is set, PWC adds alias, contact, mailbox, and new-alias polling tools. If it is unset, the Proton Mail tools still work.

For automation, run proton-workflow-watch or call the polling tools from your MCP client. Watcher output can go to a webhook, a JSONL file, or a command.

Quick start

Prerequisites

Python 3.11 or newer
Proton Mail Bridge, signed in and running
The IMAP/SMTP host, ports, username, and generated password shown by Bridge
A SimpleLogin API key only if you want the optional SimpleLogin tools

1. Install

git clone https://github.com/NtrpyDev/proton-workflow-connector.git

cd proton-workflow-connector python -m venv .venv source .venv/bin/activate python -m pip install .

On Windows PowerShell, activate the environment with .venv\Scripts\Activate.ps1.

2. Configure Bridge credentials

Keep the environment file outside the repository:

mkdir -p ~/.config/proton-workflow-connector

cp .env.example ~/.config/proton-workflow-connector/env chmod 600 ~/.config/proton-workflow-connector/env

Edit the copied file with the connection details shown in Proton Mail Bridge. Set PROTON_BRIDGE_EMAIL to the default sender and list every permitted sender address in PROTON_BRIDGE_SENDER_ADDRESSES.

3. Run the connector

proton-workflow-connector --transport stdio \

--env-file ~/.config/proton-workflow-connector/env

4. Connect an MCP client

Any MCP client or local agent runtime can use PWC as long as it supports stdio or Streamable HTTP:

stdio: run proton-workflow-connector --transport stdio --env-file ...
HTTP: run the connector with --transport streamable-http and point the client at /mcp

Claude Code stdio example:

claude mcp add --transport stdio --scope user proton-workflow \

-- "$PWD/.venv/bin/proton-workflow-connector" --transport stdio \ --env-file ~/.config/proton-workflow-connector/env

Codex stdio example:

[mcp_servers.proton_workflow]

command = "/absolute/path/to/repo/.venv/bin/proton-workflow-connector" args = [ "--transport", "stdio", "--env-file", "/absolute/path/to/private/proton-workflow-connector-env" ] default_tools_approval_mode = "prompt" startup_timeout_sec = 20 tool_timeout_sec = 120

Run server_status after connecting. It checks IMAP, SMTP, SimpleLogin, OAuth configuration, and the server version without returning secrets. Then run list_folders; Bridge folder names vary by account and version.

See MCP client setup for generic client configuration, localhost HTTP, hosted Streamable HTTP, Codex, Claude Code, and the plugin wrapper.

Example workflows

Once connected, ask your MCP client to:

"List my mail folders and show the unread count for each."
"Find unread invoices from the last 30 days without marking them read."
"Draft a reply to the latest message in this thread, but do not send it."
"Download the PDF attachments from this message."
"Archive these message UIDs after showing me the exact list."
"Create a SimpleLogin alias for shopping and add a contact for this merchant."
"Poll for new mail from billing@vendor.example using the invoices cursor."

The connector returns structured data to the MCP client. The client decides how to present it and when to request approval for actions.

Capabilities

Area	Included operations
Search and reading	Search one folder or all selectable folders, read messages and threads, inspect headers, and download attachments
Sending and drafts	Send, reply, reply-all, forward, create and update drafts, use allowed alternate senders, and attach files
Organization	Create and manage folders, apply Proton labels, change flags, archive, move, copy, restore, and manage Spam or Trash
Bounded bulk actions	Preview, mark, star, move, copy, archive, trash, restore, or permanently delete explicit UID lists
Automations	Poll persistent cursors or push new-message and new-alias events to a webhook, JSONL file, or command
SimpleLogin	Inspect account data and manage aliases, contacts, and mailboxes with an optional API key
Deployment	Local stdio, localhost Streamable HTTP, or OAuth/OIDC-protected hosted HTTP

Proton Contacts are not included because Proton Mail Bridge does not expose them.

Automations

The background watcher polls for new mail or newly created SimpleLogin aliases and emits one event per new item:

proton-workflow-watch \

--env-file ~/.config/proton-workflow-connector/env \ --folder INBOX \ --webhook-url https://example.com/hooks/proton \ --interval 60

Key behavior:

The first run establishes a baseline and does not replay the existing mailbox.
Persistent cursors survive restarts and account for IMAP UIDVALIDITY changes.
Webhook delivery is at-least-once, with retries, exponential backoff, and dead-letter handling.
An optional HMAC-SHA256 signature lets webhook receivers verify each event.
Events contain message metadata only; bodies and attachments remain available on demand through MCP tools.
JSON rules can run several independently filtered triggers from one watcher.
--dry-run shows which events and rule actions would fire without delivering, acting, or advancing cursors.

Read Triggers and webhooks for event schemas, filters, delivery guarantees, signature verification, rules, and systemd examples.

Security model

This connector processes private mail. Its defaults and boundaries are intentionally explicit:

Prefer local stdio. Bridge and the connector should stay on the same trusted machine whenever possible.
Keep credentials private. Store Bridge-generated credentials and optional API keys outside Git with user-only permissions.
Confirm destructive actions. Permanent deletion, empty-folder operations, folder deletion, and alias deletion require confirm=true after explicit user intent.
Preview before mutating. Sends, forwards, replies, bulk actions, permanent delete, and empty-folder operations support dry_run=true previews.
Treat mail as untrusted. Read/search results mark email content as content_trust: "untrusted", and outbound HTML is sanitized unless trusted_html=true.
Bound bulk operations. Bulk tools require explicit numeric UIDs and default to a maximum of 50 messages per call.
Restrict senders. Mail can only be sent from PROTON_BRIDGE_EMAIL or an address in PROTON_BRIDGE_SENDER_ADDRESSES.
Protect remote access. Non-local HTTP deployments require deliberate Host/Origin policy; internet deployments require HTTPS and an external OAuth/OIDC provider.
Limit exposed data. Optional audit records exclude addresses, message bodies, attachments, credentials, and tokens.
Treat events as untrusted input. Email subjects and alias names can be attacker-controlled; webhook receivers and commands must validate event fields.

Read SECURITY.md before using real mail and Hosted HTTP setup before exposing the connector beyond localhost.

Known boundaries

Proton Mail Bridge must remain running while the connector or watcher is active.
One server process connects to one Bridge account.
Proton Contacts, native scheduled sending, filters, account settings, and key management are not exposed by Bridge and are not emulated.
New-mail and new-alias triggers use polling because Proton and SimpleLogin do not provide a compatible push API.
Trigger events include metadata, not message bodies or attachments.
All Mail is a virtual read-only Bridge mailbox; start move and permanent-delete operations from a writable folder.

Documentation

Guide	Use it for
Setup	Bridge configuration, private environment files, folder names, and network modes
Tool reference	All 68 MCP tools, arguments, safety limits, and boundaries
Client setup	Generic MCP clients, local agents, Codex, Claude Code, plugins, and Streamable HTTP
Triggers and webhooks	Watcher rules, payloads, delivery behavior, and signature verification
Hosted HTTP	OAuth/OIDC, HTTPS, Host/Origin validation, scopes, audit logs, and systemd
Integration tests	Live Bridge and SimpleLogin verification

Official upstream references:

Development

Install the development dependencies and run the local checks:

python -m pip install -e ".[dev]"

ruff check . ruff format --check . pytest python -m compileall -q src pip-audit gitleaks detect --redact --config .gitleaks.toml

Tests use synthetic data and do not require access to a real mailbox. Live checks are documented separately in Integration tests.

See CONTRIBUTING.md for contribution and privacy requirements. Report security issues privately as described in SECURITY.md.

License

MIT. See LICENSE.

Proton Workflow Connector

Resumen

Los tres pilares de PopNx MCP

Qué puedes hacer con él

Instalación

Antes de instalar

Valores que debes completar

Qué puede hacer

Revisiones básicasi

El creador coincide con el repo

Sigue en mantenimiento

Tiene licencia

El endpoint responde

Inicio de sesión con OAuth

Sin instrucciones ocultas en las descripciones de herramientas

Comparado con otros en Otrosi

Preguntas frecuentes

Alternativas

Spec Driven Development

Remote Desktop Commander

Funooy Krillion Reference

README del creador

Proton Workflow Connector

Why use it?

How it works

Quick start

Prerequisites

1. Install

2. Configure Bridge credentials

3. Run the connector

4. Connect an MCP client

Example workflows

Capabilities

Automations

Security model

Known boundaries

Documentation

Development

License