sethbang/proton-mail-mcp

Overview

This unofficial MCP server enables sending, reading, searching, and organizing Proton Mail through SMTP and IMAP. It is built in TypeScript and is not affiliated with Proton AG. It exposes email operations as MCP tools for integration with compatible clients.

Best for

Best for
Developers who need to automate Proton Mail tasks through MCP-compatible AI tools

Use cases

• Send emails through Proton Mail via MCP
• Read and search Proton Mail inbox programmatically
• Organize Proton Mail folders and labels

How to use

Install

npx -y proton-mail-mcp

Tools exposed

• send_email
• reply_email
• reply_all_email
• forward_email
• save_draft
• list_messages
• search_messages
• get_thread
• move_thread
• delete_thread
• flag_thread
• bulk_move
• bulk_delete
• bulk_update_flags
• bulk_update_labels
• create_folder
• create_label
• rename_folder
• delete_folder
• empty_folder

Tested with

Claude Desktop, Claude Code, Cursor

Example client config

{\n  "mcpServers": {\n    "protonmail": {\n      "command": "npx",\n      "args": ["-y", "proton-mail-mcp"],\n      "env": {\n        "PROTONMAIL_USERNAME": "your-email@protonmail.com",\n        "PROTONMAIL_PASSWORD": "your-smtp-password"\n      }\n    }\n  }\n}

Notes

This unofficial MCP server enables sending, reading, searching, and organizing Proton Mail through SMTP and IMAP. It is built in TypeScript and is not affiliated with Proton AG. It exposes email operations as MCP tools for integration with compatible clients.

2 stars on GitHub. Last updated 2026-06-04. Licensed MIT.

Use cases

• Send emails through Proton Mail via MCP
• Read and search Proton Mail inbox programmatically
• Organize Proton Mail folders and labels

Pros

• Integrates with any MCP-compatible client or agent
• Open source with a clean TypeScript codebase
• Leverages standard SMTP/IMAP protocols for email operations

Cons

• Unofficial tool with only 2 stars, indicating limited testing and community support
• Relies on SMTP/IMAP credentials which may introduce security concerns
• May break if Proton Mail changes its underlying API or access policies

Indexed from awesome-mcp-servers-punkpeye and enriched against its public facts.