To export data related to end users, navigate to the People module > go to the list view > select a persona you'd like to export  from the menu at the top > go to the actions menu in the top right > select export to excel. 

However, if you have a segment applied in the global filter (the filter tab on the right side of the screen) it will also filter your "Everyone" list view in the People module. 

This allows you to filter apply certain filter parameters and export the list from "Everyone" and get contacts that only meet the filter criteria. 

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