One-time sends

A one-time send (referred to as a "newsletter" in our APIs) is a type of broadcast in Customer.io—a single message that you send to a group of people. You can also set your one-time send up with A/B test variants and/or translations.

Use these endpoints to create, send, schedule, translate, A/B test, and get metrics for one-time sends.

If your one-time sends include assets like images or PDFs, host them in your workspace's assets or at another public URL, and include the URL in your message content.