Stalwart Mail MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 166 installs a week from npm. Last commit 5 Oct 2026.
Mail and contacts on a self-hosted Stalwart server via JMAP: search, read, OCR, send, drafts.
Nothing serious here today
Today is the operative word: we check Stalwart Mail MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Connect this server
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add stalwart-mail-mcp -e 'STALWART_URL=<STALWART_URL>' -e 'STALWART_USER=<STALWART_USER>' -e 'STALWART_PASSWORD=<STALWART_PASSWORD>' -- npx -y stalwart-mail-mcp{
"mcpServers": {
"stalwart-mail-mcp": {
"command": "npx",
"args": [
"-y",
"stalwart-mail-mcp"
],
"env": {
"STALWART_PASSWORD": "<STALWART_PASSWORD>",
"STALWART_URL": "<STALWART_URL>",
"STALWART_USER": "<STALWART_USER>"
}
}
}
}[mcp_servers.stalwart-mail-mcp]
command = "npx"
args = ["-y", "stalwart-mail-mcp"]
env = { STALWART_URL = "<STALWART_URL>", STALWART_USER = "<STALWART_USER>", STALWART_PASSWORD = "<STALWART_PASSWORD>" }{
"mcpServers": {
"stalwart-mail-mcp": {
"command": "npx",
"args": [
"-y",
"stalwart-mail-mcp"
],
"env": {
"STALWART_PASSWORD": "<STALWART_PASSWORD>",
"STALWART_URL": "<STALWART_URL>",
"STALWART_USER": "<STALWART_USER>"
}
}
}
}{
"servers": {
"stalwart-mail-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"stalwart-mail-mcp"
],
"env": {
"STALWART_PASSWORD": "<STALWART_PASSWORD>",
"STALWART_URL": "<STALWART_URL>",
"STALWART_USER": "<STALWART_USER>"
}
}
}
}Put your own values in place of
<STALWART_URL> (Public address of the Stalwart server, e.g. https://mail.example.com), <STALWART_USER> (Mailbox e-mail address to sign in with), <STALWART_PASSWORD> (Mailbox or app password).
The author’s registry entry marks them as required.
Optional settings from the registry entry, left out of the block above:
MAIL_LANG (Language: auto, en, cs, de, es, fr, it, nl, pl, pt, sk), MAIL_OCR_PROVIDER (OCR of scans: auto, off, mistral, anthropic, openai, openrouter, gemini, ollama, lmstudio, custom), MAIL_OCR_API_KEY (API key of the OCR provider (not needed for local servers)), MAIL_OCR_MODEL (OCR model name), MAIL_OCR_BASE_URL (Address of a custom OpenAI-compatible OCR server).
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Stalwart Mail MCP — questions
Answers built from our own checks of this server.