There’s no referral program on mymms.com, so skip looking for friend invite links. Honestly, your best bet is using a burner email for their newsletter to grab the standard 10% welcome code. Stack that with Rakuten—they often run 4% cash back. Paste it into the "Offer Code" box right in your cart.

Their checkout is pretty finicky with codes. Most coupons exclude custom printed mixes or merch, and they won't stack. If it errors in the promo box, you're probably under the $50 threshold before tax. Just watch out for warm-weather shipping fees too; they’ll easily wipe out any 15% savings.

They take the standard cards plus PayPal, which is handy for rotating 5% categories. Heads up though: shipping costs are brutal on mymms, especially with the summer ice pack fee. Definitely drop an email signup code into the "Promo Code" box at checkout. It usually knocks off 15% to help balance out the freight.

Sign up for the My M&M’s birthday club a month early. They usually email a 15% or 20% code around your birth week. Heads up: custom prints are already pricey, and their warm-weather insulated packaging fees will wipe out the savings unless you hit the site's free shipping minimum.