The sender property contains the "From" information for a message. This includes the from name and from email.

The contents of the message in HTML format.

The list that the message should be sent to.

Optional delay added to send time to either provide a buffer or timezone offset.

API docs for Unbounce are located here https://api.unbounce.com/doc

Requests can only be made to domains associated by this application.

These params will be URL-encoded and appended to the URL when making the request.

Authentication headers are included automatically

Zapier will apply these optional headers and values to the request in addition to any headers created as part of the authentication mechanism.

Zapier will pass this along raw. If you would like to provide complex JSON, try a "Code by Zapier" step to build the structure and pass it along here. For example, {"foo": "bar"} is perfectly valid.