I am in the United States and I have recently received a certified letter that was addressed to me (name and address).
It's about 80 pages actually. The cover sheet has a confidentiality notice, and the notice is the standard "you shall not read this unless you are the intended recipient".
The cover sheet also specifically states the contents are for someone else; therefore, I have not read anything beyond the cover sheet.
A note: I have no idea who/what the sending party is, and I have no affiliation that I know of with them.
So the question: What is the most legally prudent path forward here?
As I'm assuming this is a mistake, is the burden on me to contact the sender?