3LT Letter Mail

Name: 3LT Letter Mail
Author: com.3lgrouptechnology

MCP serverMCP

Give AI assistants hands: send real USPS letters via MCP.

by com.3lgrouptechnologyrepository ↗v1.0.0

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Observed by Wellknown

Evidence

Everything here was measured by our prober or read from a registry. Nothing is self-reported.

30-day availability15/15 checks ok

30 days ago

when	check	result	http	latency	detail
3 h ago	mcp initialize	ok	200	36 ms	server 3l-group-technology-letter-mail 4.0.10 · protocol 2025-06-18 · 3 tools
10 h ago	mcp initialize	ok	200	40 ms	server 3l-group-technology-letter-mail 4.0.10 · protocol 2025-06-18 · 3 tools
17 h ago	mcp initialize	ok	200	37 ms	server 3l-group-technology-letter-mail 4.0.10 · protocol 2025-06-18 · 3 tools
23 h ago	mcp initialize	ok	200	36 ms	server 3l-group-technology-letter-mail 4.0.10 · protocol 2025-06-18 · 3 tools
29 h ago	mcp initialize	ok	200	70 ms	server 3l-group-technology-letter-mail 4.0.10 · protocol 2025-06-18 · 3 tools
2 d ago	mcp initialize	ok	200	38 ms	server 3l-group-technology-letter-mail 4.0.10 · protocol 2025-06-18 · 3 tools
2 d ago	mcp initialize	ok	200	36 ms	server 3l-group-technology-letter-mail 4.0.10 · protocol 2025-06-18 · 3 tools
2 d ago	mcp initialize	ok	200	38 ms	server 3l-group-technology-letter-mail 4.0.10 · protocol 2025-06-18 · 3 tools
2 d ago	mcp initialize	ok	200	36 ms	server 3l-group-technology-letter-mail 4.0.10 · protocol 2025-06-18 · 3 tools
3 d ago	mcp initialize	ok	200	41 ms	server 3l-group-technology-letter-mail 4.0.10 · protocol 2025-06-18 · 3 tools

Tools observed via MCP handshake

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 (l
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 un
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 s

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kind Official MCP Registry

name Official MCP Registry

repoUrl Official MCP Registry

summary Official MCP Registry

version Official MCP Registry

description Official MCP Registry

publisherName Official MCP Registry

Derived by Wellknown

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Provenance

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Official MCP Registrycom.3lgrouptechnology/3lt-letter-mail

first seen 4 d ago · fetched 21 h agoopen ↗

Field history (6 recent events)

4 d ago · declared · summary → "Give AI assistants hands: send real USPS letters via MCP."
4 d ago · declared · description → "Give AI assistants hands: send real USPS letters via MCP."
4 d ago · declared · publisherName → "com.3lgrouptechnology"
4 d ago · declared · repoUrl → "https://github.com/3LGroupTechnology/3lt-letter-mail"
4 d ago · declared · version → "1.0.0"
4 d ago · declared · protocols → ["mcp"]