3LT Letter Mail
by 3lgrouptechnology.com in Email & messaging
Give AI assistants hands: send real USPS letters via MCP.
https://3lgrouptechnology.com/mcp
Last 30 days
- Uptime
- 100%
- Response time
- 56 ms typical, 56 ms slowest 5%
- Last check
- 1 h ago
- Next check
- in 4 h
How to call it
Add it to any MCP client that supports remote servers.
{
"mcpServers": {
"3lt-letter-mail": {
"type": "http",
"url": "https://3lgrouptechnology.com/mcp"
}
}
}3 tools
- draft_letter
Create a letter DRAFT: verifies the recipient address with PostGrid, screens content, and returns a price quote. This NEVER mails anything. Pass EITHER html (letter body as an HTML string) OR pdf_path (path to a PDF file on the server). PDF text is extracted for screening; if ex
- request_send
Request that a draft be mailed. approval-tier keys: creates a PENDING request and returns a one-tap Allow/Deny approval_url for the human. Nothing is mailed until Allow. on_command keys: may auto-send inside guardrails (spend caps, content screening, anomaly detection); anything
- send_status
Check a send request: status (PENDING/SENT/REJECTED/FAILED), the key's trust tier and tier decision, approval state (+approval_url while pending), and billing state (Stripe charge id when billed).
Security scan
- No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.
Recent checks
| When | Result | HTTP | Time |
|---|---|---|---|
| 1 h ago | Passed | 200 | 56 ms |