# paperplane

Real mail. No account. One request.

Letters, Certified Mail and postcards from the web, REST, MCP or the CLI. No API key, no account. Quote, confirm, send; USPS delivers. From $1.99.

## Get started

- [Send a letter](https://www.sendpaperplane.com/send)
- [Pricing](https://www.sendpaperplane.com/pricing.md)
- [Developer & agent docs](https://www.sendpaperplane.com/developers)
- [Full agent-oriented site index](https://www.sendpaperplane.com/llms.md)

## For AI agents

This product is agent-native. Quote and send letters over MCP (`https://www.sendpaperplane.com/api/mcp`) or REST (`https://www.sendpaperplane.com/v1`), with a free sandbox mode for testing. See [https://www.sendpaperplane.com/llms.md](https://www.sendpaperplane.com/llms.md) for the full agent surface, or [https://www.sendpaperplane.com/.well-known/agent-card.json](https://www.sendpaperplane.com/.well-known/agent-card.json) for the machine-readable capability card.