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Multi-account email MCP server for Gmail, IMAP, and JMAP: search, send, drafts, labels.
About
Multi-account email MCP server for Gmail, IMAP, and JMAP: search, send, drafts, labels.
Security Report
mailbox-mcp is a multi-provider email server whose stated purpose requires broad mailbox and network access, and the reviewed JMAP provider enforces HTTPS, SSRF validation, no-redirect fetches, and sanitized headers. Its send paths carry explicit confirmations and per-account guards, but the README describes a very large tool surface that can send and delete mail, so users should keep approval or allowlist settings on agent-driven accounts. The truncated source limits full verification of Gmail, IMAP, and the remaining JMAP code. Supply chain analysis found 8 known vulnerabilities in dependencies (1 critical, 3 high severity). Package verification found 1 issue.
3 files analyzed · 13 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
What You'll Need
Set these up before or after installing:
Environment variable: MAILBOX_MCP_PASSPHRASE
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-jgalea-mailbox-mcp": {
"env": {
"MAILBOX_MCP_PASSPHRASE": "your-mailbox-mcp-passphrase-here"
},
"args": [
"-y",
"mailbox-mcp"
],
"command": "npx"
}
}
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