MCP Server
MCP
Proton Mail (unofficial)
Unofficial Proton Mail MCP — send, read, search & organize email over SMTP and IMAP
Install
npx -y [email protected]
Configuration Example
{
"remotes": [],
"packages": [
{
"registryType": "npm",
"registryBaseUrl": "https://registry.npmjs.org",
"identifier": "proton-mail-mcp",
"version": "1.0.2",
"runtimeHint": "npx",
"transport": {
"type": "stdio"
},
"environmentVariables": [
{
"description": "Your Proton Mail email address",
"isRequired": true,
"name": "PROTONMAIL_USERNAME"
},
{
"description": "Your Proton Mail SMTP password (not your login password; generate one in Proton settings)",
"isRequired": true,
"isSecret": true,
"name": "PROTONMAIL_PASSWORD"
},
{
"description": "SMTP host",
"default": "smtp.protonmail.ch",
"name": "PROTONMAIL_HOST"
},
{
"description": "SMTP port",
"format": "number",
"default": "587",
"name": "PROTONMAIL_PORT"
},
{
"description": "Use TLS for SMTP (true for port 465)",
"default": "false",
"name": "PROTONMAIL_SECURE"
},
{
"description": "Proton Mail Bridge IMAP host (required for read/search tools)",
"default": "127.0.0.1",
"name": "IMAP_HOST"
},
{
"description": "Proton Mail Bridge IMAP port",
"format": "number",
"default": "1143",
"name": "IMAP_PORT"
},
{
"description": "Use TLS for IMAP",
"default": "false",
"name": "IMAP_SECURE"
},
{
"description": "Proton Mail Bridge username (falls back to PROTONMAIL_USERNAME)",
"name": "IMAP_USERNAME"
},
{
"description": "Proton Mail Bridge password (falls back to PROTONMAIL_PASSWORD)",
"isSecret": true,
"name": "IMAP_PASSWORD"
},
{
"description": "Disable all mutating tools (send, move, delete, flags, labels, bulk ops, folder/label management)",
"default": "false",
"name": "READONLY"
},
{
"description": "Refuse live sends to any recipient other than PROTONMAIL_USERNAME (for throwaway/QA accounts)",
"default": "false",
"name": "RESTRICT_OUTBOUND_TO_SELF"
},
{
"description": "Allowlist directory enabling download_attachment.saveTo; when unset, attachments return as inline base64",
"name": "ALLOW_FILE_DOWNLOAD_DIR"
},
{
"description": "Register the empty_folder tool (not recommended)",
"default": "false",
"name": "ALLOW_EMPTY_FOLDER"
},
{
"description": "Enable verbose logging to stderr",
"default": "false",
"name": "DEBUG"
}
]
}
]
}
mcp
model-context-protocol
npm
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