Unofficial self-hosted MCP connector for Proton Mail Bridge and SimpleLogin.
Connect Runs on your machine
claude mcp add proton-workflow-connector -e PROTON_BRIDGE_USERNAME=<PROTON_BRIDGE_USERNAME> -e PROTON_BRIDGE_PASSWORD=<PROTON_BRIDGE_PASSWORD> -e PROTON_BRIDGE_EMAIL=<PROTON_BRIDGE_EMAIL> -e SIMPLELOGIN_API_KEY=<SIMPLELOGIN_API_KEY> -- uvx proton-workflow-connector==1.3.0{
"mcpServers": {
"proton-workflow-connector": {
"command": "uvx",
"args": [
"proton-workflow-connector==1.3.0"
],
"env": {
"PROTON_BRIDGE_USERNAME": "<PROTON_BRIDGE_USERNAME>",
"PROTON_BRIDGE_PASSWORD": "<PROTON_BRIDGE_PASSWORD>",
"PROTON_BRIDGE_EMAIL": "<PROTON_BRIDGE_EMAIL>",
"SIMPLELOGIN_API_KEY": "<SIMPLELOGIN_API_KEY>"
}
}
}
}{
"mcpServers": {
"proton-workflow-connector": {
"command": "uvx",
"args": [
"proton-workflow-connector==1.3.0"
],
"env": {
"PROTON_BRIDGE_USERNAME": "<PROTON_BRIDGE_USERNAME>",
"PROTON_BRIDGE_PASSWORD": "<PROTON_BRIDGE_PASSWORD>",
"PROTON_BRIDGE_EMAIL": "<PROTON_BRIDGE_EMAIL>",
"SIMPLELOGIN_API_KEY": "<SIMPLELOGIN_API_KEY>"
}
}
}
}{
"servers": {
"proton-workflow-connector": {
"type": "stdio",
"command": "uvx",
"args": [
"proton-workflow-connector==1.3.0"
],
"env": {
"PROTON_BRIDGE_USERNAME": "<PROTON_BRIDGE_USERNAME>",
"PROTON_BRIDGE_PASSWORD": "<PROTON_BRIDGE_PASSWORD>",
"PROTON_BRIDGE_EMAIL": "<PROTON_BRIDGE_EMAIL>",
"SIMPLELOGIN_API_KEY": "<SIMPLELOGIN_API_KEY>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
PROTON_BRIDGE_USERNAMERequired | Bridge IMAP/SMTP username (from the Bridge app) |
PROTON_BRIDGE_PASSWORDRequired, secret | Bridge-generated password (never your Proton account password) |
PROTON_BRIDGE_EMAILRequired | Primary Proton address served by Bridge |
SIMPLELOGIN_API_KEYOptional, secret | SimpleLogin API key; omit to disable alias tools |
Details
| Package | [email protected] (PYPI, stdio) |
| First published | 2 Jul 2026 |
| Last updated | 2 Jul 2026 |
| Registry name | io.github.NtrpyDev/proton-workflow-connector |
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