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protonmail-mcp

protonmail-mcp

Public
amotivv/protonmail-mcp

Enables secure email sending via Protonmail's SMTP service with support for multiple recipients, CC, BCC, plain text and HTML content, compatible with Model Context Protocol-based Claude Desktop and Cline VSCode extension.

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May 29, 2025
Updated Jun 4, 2025

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MCP Server

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Configuration Requirements
none
Configure authentication and required variables to access this MCP server
Required Environment Variables
PROTONMAIL_PORT
Optional
string

SMTP server port (default: 587 for STARTTLS, 465 for SSL/TLS)

Default: 587
PROTONMAIL_USERNAME
Optional
string

Your Protonmail email address

PROTONMAIL_HOST
Optional
string

SMTP server hostname

Default: smtp.protonmail.ch
PROTONMAIL_PASSWORD
Optional
string

Your Protonmail SMTP password (not your regular login password)

PROTONMAIL_SECURE
Optional
string

Whether to use a secure connection (default: 'false' for port 587, 'true' for port 465)

Default: false
DEBUG
Optional
string

Enable debug logging (set to 'true' to see detailed logs, 'false' to hide them)

Default: false

Security Notice

Your environment variables and credentials are securely stored and encrypted. LangDB never shares these configuration values with third parties.

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