fbossiere/proton-safe-mcp

Overview

A Python-based MCP server for Proton Mail that creates email drafts with attachments. It requires out-of-band human approval before any draft can be sent. The draft-only design keeps AI agents from sending messages directly.

Best for

Best for
Teams that want AI-assisted email drafting with human oversight in Proton Mail.

Use cases

• Compose Proton Mail drafts from an MCP client
• Attach files to draft emails programmatically
• Add a human approval step to AI-generated email workflows

How to use

Tools exposed

• PROTON_BRIDGE_USER
• PROTON_BRIDGE_ALIASES
• PROTON_IMAP_PORT
• PROTON_MCP_STATE_DIR
• PROTON_MCP_MAX_ATTACHMENT_BYTES
• PROTON_MCP_MAX_RECEIVED_ATTACHMENT_BYTES
• PROTON_MCP_MAX_CHUNK_BYTES
• PROTON_MCP_UPLOAD_TTL_SECONDS
• PROTON_MCP_MAX_BODY_CHARS

Tested with

Claude Desktop, Claude Code, Cursor, Continue, VS Code, ChatGPT

Notes

A Python-based MCP server for Proton Mail that creates email drafts with attachments. It requires out-of-band human approval before any draft can be sent. The draft-only design keeps AI agents from sending messages directly.

4 stars on GitHub. Last updated 2026-10-10. Licensed MIT.

Use cases

• Compose Proton Mail drafts from an MCP client
• Attach files to draft emails programmatically
• Add a human approval step to AI-generated email workflows

Pros

• Draft-only design prevents accidental sends
• Out-of-band approval keeps a human in control
• Attachment support covers common email needs

Cons

• Cannot send emails directly, only drafts
• Small project with limited community adoption
• Requires a separate approval process to be useful

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