If a subscriber with this email doesn't exist, one will be created.

If this form has a sequence attached to it, would you like the subscriber to be opted into the sequence?

A unique ID for the transaction (ie. Purchase ID or Invoice ID). If a purchase with this Transaction ID already exists, it will be updated.

If a subscriber with this email doesn't exist, one will be created.

Discount amount applied to the purchase in your currency.

3 letter currency code, default USD.

Unique identifier of this product

API docs for ConvertKit are located here http://developers.convertkit.com/#api-basics

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.