Yes, you can delete the attachments after uploading them using the Mass File Upload app. Follow the steps below:

Steps to Follow:

  1. Upload Attachments:
    • Use the List View, Search, or Advanced SOQL option to upload attachments.
  2. Receive Success Message:
    • After successfully uploading attachments, a success message will appear on the rendered table.
  3. Click on the Delete Button:
    • In the same table look for Delete button, click on the "Delete" button.
  • Confirm Deletion:
    • A confirmation popup will appear. Click "OK" to confirm.
  • Deletion Complete:
    • Once you click "OK," all attachments will be deleted from the records.