What a waste of resources. So many envelopes go unopened to the landfill. I never even look at them.
There is one exception. We have a local advertiser newspaper I do read. The local businesses load it with coupons and sale offers. These are from stores in the nearby town I frequent. It benefits me to clip and save, since I regularly need the products.
The rest are a waste of time, paper, ink, gas and landfill space. IMO