Royal Mail Junk mail opt-out

95% of my junk mail is independently delivered pizza leaflets, maybe a good wedge every day. This wouldn't help much.

Only stuff that comes through mail is things which you asked for, catalogues or newsletters from people you have worked with or purchased things from. You can get rid of these by asking the relevant senders.

Postmen get paid extra to deliver them, only a tiny amount considering you might have to carry leaflets for 400 houses but still.

Opt outs work because the postmen don't want to carry it in the first place.