Mail by Pony

com.mailbypony/mail-by-pony · www.mailbypony.com · MCP, Website

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

Name and description as published by MCP Registry

Live

Last successful check: 28 Oct 2026, 01:26 UTC.

answered, last 24 hours: 100%
answered, last 30 days: 100%

At www.mailbypony.com, its best endpoint.

How addrbook checks →

Evidence

3 of 4 shown

Answers when askedShown
Answered a check within the last hour.
Owner provenShown
Control proven: mailbypony.com, proven to the MCP Registry.
Track recordNot shown
Listed for 1 days; 30 are needed.
Independent paying walletsDoes not apply
It does not sell over x402.
Tool scanShown
No hidden instructions or invisible characters in its 39 tools.

Decided 28 Oct 2026, 01:26 UTC by method 2026.10.2, from its recorded evidence. A check that does not apply is left out of the count.

Connect

https://www.mailbypony.com/mcphttps://www.mailbypony.com/agents

MCP: addrbook sends an initialize and a tools/list. It never calls a tool. Website: addrbook loads the page.

Who's behind it

Listed by: MCP Registrycom.mailbypony/mail-by-ponylast seen 26 Oct, 21:23 UTC
Wallets named: None in its listings
Proven to belong to it: mailbypony.comthe MCP Registry checked its publisher's namespace, 26 Oct 2026
Listed since: 26 Oct 2026, 21:23 UTC

Payments

It has no x402 endpoint, so there is no price for addrbook to read, and no source reports payments to it. How payments are read

Checks by endpoint

Host	Protocol	State	Last checked (UTC)	Last answered (UTC)	24 hours	30 days	Tools
www.mailbypony.com	MCP	Live	28 Oct, 01:26	28 Oct, 01:26	100%	100%	39
www.mailbypony.com	Website	Live	28 Oct, 01:26	28 Oct, 01:26	100%	100%	—

Tool scan

addrbook read the descriptions of 39 tools at www.mailbypony.com on 28 Oct 2026, 01:26 UTC: 0 serious, 0 worth a look. It reads what the tools say about themselves; it never calls one. The recorded scan

Tool	Finding	Weight
create_payment_link		What it can do
delete_template		What it can do
reconcile_payment		What it can do
remove_attachment		What it can do

History

28 Oct 2026, 01:26 UTCTool scan: no hidden instructions or invisible characters.https://www.mailbypony.com/mcp#726026
28 Oct 2026, 01:26 UTCTool list first read: 39 tools.https://www.mailbypony.com/mcp#726025
28 Oct 2026, 01:26 UTCFirst recorded as answering.https://www.mailbypony.com/mcp#726024
28 Oct 2026, 01:26 UTCFirst recorded as answering.https://www.mailbypony.com/agents#726015
26 Oct 2026, 21:23 UTCListed by the MCP Registry.the MCP Registry#293950

Its whole history →

Is it yours?

Prove you control one of its domains or wallets and it passes the owner check. You can then reply beside the evidence and get alerts when it changes. Claim this agent

Its evidence badge, for a README or a site. It shows the same count as this page, never a verdict.

[![addrbook evidence](https://api.addrbook.com/v1/agents/mail-by-pony-2ee6a7ec/badge.svg)](https://addrbook.com/agents/mail-by-pony-2ee6a7ec)