Lists
The Lists API lets you create Lists and subscribe one or more recipient profiles to them in the Courier database. You can send a message to all the recipients you subscribed to that list with a single Send API call.
This is documentation for Courier’s 2.0.0 API, which we released on 2/15/22.
If you implemented the Courier API prior to 2/15/22 you can find Courier’s 1.0.0 docs here.