# Mail by Pony (mailbypony.com)

Prints uploaded letters or PDFs on paper, adds an envelope and stamp, and mails them through USPS.

- Atlas card: https://inite.ai/en/atlas/mailbypony.com
- Site: https://mailbypony.com
- For: People who need a paper letter mailed without printing, stuffing envelopes, or visiting a post office.
- Categories: documents
- Use not measured/100 · alive 100/100

## Used for

- mail a written complaint to a landlord
- dispute a billing error by posted letter
- send a cancellation letter to an insurer

## Price

Not read yet.

## For developers

- API docs: https://mailbypony.com/docs
- MCP server: com.mailbypony/mail-by-pony (namespace; open on 2026-10-29, 39 tools)
- Read 2026-10-29

## MCP server, measured daily

Server: https://www.mailbypony.com/mcp, checked every day since 2026-10-29 (5 checks).

- Answered: measuring, 5 daily checks so far
- Median first answer: 122 ms
- Sign-in: none
- Context its tool definitions take: about 9133 tokens (39 tools)
- Tool definitions: B, 87/100
- Failing "params_described": 31 of 39 tools
- Warning "open_writes": create_draft, update_draft, upload_attachment, add_library_artwork, remove_attachment
- Method: https://inite.ai/en/atlas/mcp/report

## Your data

- Certifications stated: none
- Read 2026-10-29

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Source: INITE Atlas, https://inite.ai/en/atlas/mailbypony.com. JSON: https://inite.ai/api/atlas/mailbypony.com. MCP: https://inite.ai/api/mcp (atlas_lookup).