I only send about six cards by post now - then two or three more given by hand if I manage to meet up with some former workmates/friends at that time of year. (That got cancelled last year, and I still have the cards I had written for them!)
I might cut my postal list done to just two this year - two elderly relatives who really appreciate them.
I am going to be honest - I have cut down on cards for several reasons, but one is definitely to save money, but we need it ourselves so unlike (apparently) everyone else, I won't be giving it to charity. There, I've said it. If that makes me look mean or selfish, I'm sorry, but there you have it!