Although the user is prompted in EAP for Full Disk Access. In case if you are attempting to manually grant EAP ‘Full Disk Access’ permission, here is how you can do it:

  1. Go to Settings (your apple settings)-> Security & Privacy ->Full Disk Access
  2. Then add Email Archiver Pro as a supported App.
  3. This should give EAP access to email folders.
  4. Quit EAP and restart it again.