3LT Mail & Fax

com.3lgrouptechnology/3lt-letter-mailVersion 1.0.2

Letters + faxes for AI assistants in one MCP service. Letters from $1.97 all-in; faxes from $0.57.

Status

Responds169 msNov 14, 2026, 13:44 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 13:44 UTC
Latency: 169 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: EU hosting detected (detected, not a legal statement)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://3lgrouptechnology.com/mcpResponds169 msNov 14, 2026, 13:44 UTC

No sign-in

Claude Code

claude mcp add --transport http 3lt-letter-mail https://3lgrouptechnology.com/mcp

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: 3lt-letter-mail
Remote MCP server URL: https://3lgrouptechnology.com/mcp

Cursor

{
  "mcpServers": {
    "3lt-letter-mail": {
      "url": "https://3lgrouptechnology.com/mcp"
    }
  }
}

VS Code

code --add-mcp '{"name":"3lt-letter-mail","type":"http","url":"https://3lgrouptechnology.com/mcp"}'

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Tools

7 tools

Tools of 3LT Mail & Fax
	Description		Read-only	Idempotent	Open world
`approve_fax`Approve a fax DRAFT so it can be transmitted. The content is re-screened at approval time. Only the key that created the fax can approve it. Nothing is transmitted by this call — send_fax does that.	Approve a fax DRAFT so it can be transmitted. The content is re-screened at approval time. Only the key that created the fax can approve it. Nothing is transmitted by this call — send_fax does that.	No	No	Yes	No
`create_fax_draft`Create a fax DRAFT: validates the recipient number, counts the PDF's pages, screens its text, and returns a price quote (Phaxio per-page cost x pages + the flat $1.00 service fee). This NEVER transmits anything — call approve_fax, then send_fax.	Create a fax DRAFT: validates the recipient number, counts the PDF's pages, screens its text, and returns a price quote (Phaxio per-page cost x pages + the flat $1.00 service fee). This NEVER transmits anything — call approve_fax, then send_fax.	No	No	No	No
`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 extraction fails the draft is kept but flagged needs_review.	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 extraction fails the draft is kept but flagged needs_review.	No	No	No	Yes
`get_fax_status`Check a fax: lifecycle status (DRAFT/APPROVED/SENT/FAILED), page count, quote, and — once sent — the live delivery status from Phaxio.	Check a fax: lifecycle status (DRAFT/APPROVED/SENT/FAILED), page count, quote, and — once sent — the live delivery status from Phaxio.	No	Yes	Yes	Yes
`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 outside them stays PENDING.	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 outside them stays PENDING.	Yes	No	No	Yes
`send_fax`Transmit an APPROVED fax via Phaxio. Refuses drafts that were never approved and faxes that were already sent — a fax can be transmitted exactly once.	Transmit an APPROVED fax via Phaxio. Refuses drafts that were never approved and faxes that were already sent — a fax can be transmitted exactly once.	Yes	No	Yes	Yes
`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).	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).	No	No	No	No

Details

Registry status: Active
Published: Nov 9, 2026
Updated: Nov 9, 2026
Website: https://3lgrouptechnology.com/⁠ (opens in a new tab)
Repository: https://github.com/3LGroupTechnology/3lt-letter-mail⁠ (opens in a new tab)
Categories (suggested): CommunicationSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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