Today only at MyM&, take 20% off sitewide with no minimum required. (The discount should apply automatically after clicking "Get Yours Now"; if you don't see it, try applying code "SUMMER20".) That's tied with a deal from 2010 as easily the best sitewide percent-off coupon we've ever seen from M&Ms. (We last saw 15% off personalized gifts alone in April.) Shipping starts at $7.99 for M&M's merchandise, or $9.95 if you are ordering M&M's candies.