# Outbound Mail API

> Print and mail from software.

## What it does

- Accept letters, postcards, notices, and document bundles through an API
- Handle one-off sends or larger batch workflows
- Return delivery proof and lifecycle updates back to the calling system

## Best fit

Start here when you already know what should be mailed and the main problem is turning a software decision into a reliable physical send.

## Why this matters

Traditional mail vendors often introduce a portal, spreadsheet, or manual upload step. The outbound API keeps timing, approvals, and follow-up inside the same workflow that made the decision.

## Related pages

- HTML page: https://mailbox.bot/outbound-mail-api
- Why agentic mail: https://mailbox.bot/why-agentic-mail
- Virtual Mailbox for Agents: https://mailbox.bot/virtual-mailbox-for-agents