Postback is used to pass the information like conversions, app_events, sales, leads captured to the publisher. It can be either be at the Global level or Campaign level to pass the necessary information. 

Follow these general steps to add a publisher's postback-

1- Find the Postback/Pixels tab in the left section of the panel under the publisher's tab.

2-Go to the "Action" button and click on "New Postback" option

3-Enter the necessary details including the URL and update the macros with Trackier's macros. Hit the Add button after the required details are filled, from the bottom.

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