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1

Install the SDK

The paubox-python3 package on PyPI is an old release (1.0.1) that predates these docs; install from GitHub.
2

Set your credentials

Export your API key as an environment variable:
To obtain your API key, see Authentication.
3

Send your first email

Create send.py:
Run it:
The response dict contains sourceTrackingId.
4

Check delivery status

The response includes message_deliveries with per-recipient status.

Next steps

  • Email client: add HTML, attachments, CC/BCC, and handle errors
  • Forms client: retrieve form schemas and submit responses