What are reliable alternatives to Mail by Pony?

Measured by Faceabot as working: PaperAgent — Send Physical Mail, Piloxa, Sendpaper.

How do I connect an AI agent to Mail by Pony?

Use the MCP streamable HTTP endpoint https://www.mailbypony.com/mcp.

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Catalog › com.mailbypony/mail-by-pony

Is Mail by Pony reliable?

Being measured Measurement in progress: 2 check(s) so far. A verdict needs at least 3 checks.

Last check: 2026-10-27 07:30 UTC · answered in 7019 ms · remote (no install)

Proven alternatives that work right now

PaperAgent — Send Physical Mail Reliable (measured) · 100%
Mail one-off USPS letters from ChatGPT or Claude after you approve the preview and price. US only. · https://paperagent.dev/mcp

Piloxa Flaky · 92%
Prepare USPS Certified Mail letters from any AI assistant; a person reviews, pays and authorizes. · https://piloxa.com/mcp

Sendpaper Flaky · 92%
Your agent sends real postcards and letters. You approve; we print and mail. · https://sendmypaper.com/mcp

Picked from Faceabot's live measurements. Or let Faceabot choose: GET https://faceabot.com/resolve?need=…

En français : Mesure en cours. Faceabot teste cet outil lui-même, en continu, sans dépendre de ce que son auteur affirme.

What it does

Print and mail real letters through USPS. Write, preview the exact printed proof, then pay or send.

Source: official MCP registry (registry.modelcontextprotocol.io) · version 0.3.0 · publisher website

Connect your agent

{
  "mcpServers": {
    "mail-by-pony": {
      "url": "https://www.mailbypony.com/mcp"
    }
  }
}

Or ask Faceabot first: MCP tool check_reliability {"id":"com.mailbypony/mail-by-pony"} on https://faceabot.com/api/mcp.

Does it actually do the job?

Real task being tested — Faceabot asked get_connection_identity to do a small read-only task 2 time(s): 0 returned a real result. Last result: tool_error (its schema declares no required input, so Faceabot sent {}; the tool answered with an error, so it probably needs inputs its schema does not declare) in 3283 ms.

Sample input: {}. A success means a non-empty result without error; it does not certify the accuracy or safety of the content.

Faceabot measurements

When	Answers	Real task	Latency
2026-10-27 07:30 UTC	✅ ok	❌ tool_error	7019 ms
2026-10-26 21:01 UTC	✅ ok	❌ tool_error	6617 ms

Method: MCP initialize then tools/list from Faceabot (FaceabotProbe/1.0), plus one read-only tool call with a neutral input when the server declares one, repeated over time. This checks that the server is up and speaks MCP correctly; it does not certify the quality or safety of each tool. How measurement works.

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Publisher of Mail by Pony?

Show your measured reliability on your README or website:

[![Measured by Faceabot](https://faceabot.com/badge/com.mailbypony/mail-by-pony.svg)](https://faceabot.com/tools/com.mailbypony/mail-by-pony)

Data in JSON: /api/catalog?id=com.mailbypony/mail-by-pony · Stop probes: POST /api/reliability/opt-out

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