I have this problem, except it's a whole nation (seemingly) of people due to how common my last name is in a specific country.

My address is [first initial][last name]@gmail so anyone with a first name that starts with the same letter as mine and the same last name (which, there are SO MANY).

I get;

job offers family photos (I typically respond letting these people know they're not getting through to whoever they're intending) verizon bills (I'm also a verizon customer and they absolutely refuse to take my email off of the other two accounts - I've also texted both accounts since they're numbers have come through various times in the correspondences and they don't even acknowledge my communication let alone update their accounts - they're always late on their payments, but have the newest iPhone's all the time :D) purchase receipts from so many retailers I don't keep track (some of these people have real silly amounts of money) auto purchase receipts bank emails lease offers (just today I had to respond to a leasing agent who was trying to let someone know they got a place they were trying to rent in NYC for crazy money)

It's mind blowing to me how many people get their email address wrong and miss so many important emails, seemingly without ever realizing it.