{"name":"com.3lgrouptechnology/3lt-letter-mail","slug":"3lgrouptechnology-3lt-letter-mail","title":"3LT Letter Mail","description":"Give AI assistants hands: send real USPS letters via MCP.","url":"https://mcp.market/server/3lgrouptechnology-3lt-letter-mail","rating":null,"grade":"B","score":81,"certified":false,"status":"active","category":"other","tags":[],"presence":{"score":20,"stars":0,"forks":0,"downloads_week":null,"last_push_at":"2026-10-03T15:05:21.000Z","license":null},"uptime":{"percent":100,"checks":28,"ok":28,"last_checked_at":"2026-11-04T11:01:01.706Z","last_ok_at":"2026-11-04T11:01:01.706Z","latency_ms":1505},"claimed":false,"transport":"remote","callable_via_gateway":true,"default_price_micros":0,"repository":"https://github.com/3LGroupTechnology/3lt-letter-mail","website":null,"version":"1.0.0","remotes":[{"type":"streamable-http","url":"https://3lgrouptechnology.com/mcp"}],"packages":[],"tools":[{"name":"draft_letter","description":"Create a letter DRAFT: verifies the recipient address with PostGrid,\nscreens content, and returns a price quote. 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Defaults to False, which\nsends standard First Class mail. Only set True when the customer\nexplicitly asked for certified mail: it costs significantly more\n(PostGrid's certified rate + the flat $1.00 service fee, roughly\n$11 per letter). Never default this to True."}},"required":["api_key","to","from_address"],"additionalProperties":false}},{"name":"request_send","description":"Request that a draft be mailed.\n\napproval-tier keys: creates a PENDING request and returns a one-tap\nAllow/Deny approval_url for the human. 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