The export to Excel feature allows you export expiration items into an excel sheet.
To export an expiration list to excel, click on Expirations (or Contacts) on the top menu and then do any search.
Then click on the share icon on the right and select Export to Excel.
To create extensive reports using this export function, you can create custom list views using the "Select Fields to Display" option to add more fields to your list view, and then exporting. We have more on Creating Custom List views here: