Save ink by not printing every e-mail

I like to sign up to receive discounts via e-mail from some of my favorite restaurants. No need to pay full price when you know that discounts exist. But most of the time I get many more coupons via e-mail than I will ever use. So, what do you do?

What I've found works for me is to save the e-mail as a PDF and place it into a coupon folder on my computer. As I'm saving it I'll make sure the file name includes the restaurant as well as the expiration date. This way I'll have my coupons handy and can print on demand, rather than printing each e-mail that comes through. This tip saves both ink, and paper. And if you sign up for discounts you can save the next time you dine out.