Comment Physical mail, and delete (Score 1) 619
I had this for months, it started to get out of control when the other person bought a bunch of stuff on HSN and I got all the invoices, shipping notices etc. Fortunately (or un-, depending on your viewpoint) they had shipping addresses in the emails. I wrote a direct but polite letter telling them that they are using the wrong address for everything. It really tapered off after that.