---
name: postmark-api
description: Postmark API syntax — sending transactional emails, batch emails, and attachments. Use when integrating Postmark or sending email from application code.
---

# postmark-api

Read [the focused guide](references/guide.md) when this integration is part of the current task. Use only the sections relevant to the endpoint, component, or operation being changed.

Confirm the target repository, installed library/CLI version, and configured environment. Examples and dated observations are not proof of current service behavior. Preserve the user's requested scope: writing integration code does not authorize sending real messages, making calls, retrieving unrelated credentials, or changing live resources. Use fixtures or sandbox checks when available and state which behavior was actually verified.