@FrancineS so what I would do is test it.
Are you sending attachments from your email client like Gmail or Outlook? You’ll want to make sure you’re logged into HubSpot and logging/tracking the emails.
Are you sending them through HubSpot natively? They should appear there. Make sure the “carrot” is open:
Send an attachment and see if it’s showing up. It’s possible that past emails were not logged.