What is a Custom Field?
Adding a Custom Field to your account, so that you can import more data, is only going to enhance the ability of personalising your communications, where you can then Segment based on data and even personalise your comms within the Editor based on their Contact Cards. There are two ways to create Custom Fields in NewZapp.
The Contacts screen
In the Contacts screen click the cog in the top right corner and clicking Custom Fields.
This is where you can then manage the data fields known as 'Custom Fields' that you're looking at importing along with the standard fields like 'Email Address', 'First Name', 'Last Name' etc.
Once you've added one into this area, you must ensure that your import of contacts has the headers matching exactly what your custom field says.
Through a Contact Import
If you click the Exclude header there is an option for "New Field" and clicking this will open this screen.
Fill in this box and click Add Field and the columns will go white, with the new custom field at the top. From there you can import the contact file as you normally would.