I also live alone, And like yourself, when my Husband was alive mail was opened by each of us. I now tend to open everything perhaps not even looking to see who it addressed to and sort out the relevant post and the circulars, my funniest experience was mail coming to me for the occupant of another house three doors away,this happened lots of times despite me re-posting it through my neighbours door and mentioning it to them, it still kept coming. One I did open by mistake, rang the company and told them that I was No. 1 my neighbour No.6 and could they adjust their records accordingly, and they told me that they have 100% proof that the person lives at my address, needless to say at that point I gave up.!! Just keep putting them back in post marked "not at this address".( could be he's keeping something from his missus !!)