Multi-account email MCP server for Gmail, IMAP, and JMAP: search, send, drafts, labels.
Connect Runs on your machine
claude mcp add mailbox-mcp -e MAILBOX_MCP_PASSPHRASE=<MAILBOX_MCP_PASSPHRASE> -- npx -y [email protected]{
"mcpServers": {
"mailbox-mcp": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"MAILBOX_MCP_PASSPHRASE": "<MAILBOX_MCP_PASSPHRASE>"
}
}
}
}{
"mcpServers": {
"mailbox-mcp": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"MAILBOX_MCP_PASSPHRASE": "<MAILBOX_MCP_PASSPHRASE>"
}
}
}
}{
"servers": {
"mailbox-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"MAILBOX_MCP_PASSPHRASE": "<MAILBOX_MCP_PASSPHRASE>"
}
}
}
}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 |
|---|---|
MAILBOX_MCP_PASSPHRASEOptional, secret | Passphrase used to encrypt IMAP/JMAP credentials at rest. Required for IMAP and JMAP accounts. |
Details
| Package | [email protected] (NPM, stdio) |
| First published | 10 Oct 2026 |
| Last updated | 10 Oct 2026 |
| Registry name | io.github.jgalea/mailbox-mcp |
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