Stop Junk Mail
This list is by no means exhaustive, but it's a good start if you want to still be kept aware of sales and deals from big stores but don't want the actual print coupons to come in the mail. In most cases, you can request if you want to receive the promotion codes weekly or daily. I haven't found over-sending to be a problem but we probably each have our own criteria for how many is too many.
- Promotion Code offers both weekly and daily mailings.
- So does Keycode. Keycode also can send news filings for their stores.
- Coupons.com is brand new but looks to have sizable offerings.
- RetailMeNot just sent me spam so I would not recommend them.