Trigger flow with email with attachment

I’m triggering a flow with the email option. It will be an external company sending the email with some attachments so I can either give them the generated email or create a rule that forwards their email to the correct flow email address.
My problem is about how to access the data included in the email. I get the other parameters like subject, body, etc. But I cannot see how to get the attachments.

What would be a workaround or the way to solve this problem?
Thanks,
Ana