I had a reader email me and ask What to do with Expired Coupons, I have a great post on how you can send these to the Military since most can use these at the commissary for up to 6 months after the expiration date.
This page has one address listed for sending coupons but there are others available as well, if you have an address that you send coupons to and you want to leave it in the comments that would be great!
https://www.passionforsavings.com/2011/12/what-to-do-with-expired-coupons-coupons-to-the-military/
I checked out a site last year on this and they did not want internet coupons; in other words just the ones in the Sunday circulars, magazines, and the like.