Import data
The Import Data feature allows you to load ad-hoc data to use in a segment/audience. You can create a segment to use as a stand-alone in an audience for immediate activation or as a suppression/segment in another audience.
You should continue to use Feed Layouts for ongoing feeds, but the Import Data feature provides quick access to ad-hoc data for single use (e.g., you want to send an email to a list of event attendees that you have in a spreadsheet).
From the Audience page, select Build a Segment.
Select Import Data.
Drag and drop your file or select the upload area to browse and select your file.
Imported files must have unique names.
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Select the mapping for each column in the File Analysis section.
You can optionally select View File Sample to preview the file.
Select Import Data to create the segment.