Redenvelope.com is offering free shipping when you use your Mastercard.

Two steps required to redeem:

1) enter MCSAVINGS in the Promotion Code box on the Shopping Bag page

2) choose MasterCard® card as your Payment type on the Order Summary page. Please note the cutoff for 2-Business Day shipping for delivery by Christmas is Thursday, December 20, 3pm PT / 6pm ET.

Alternatively, use code NOEXCUSES for a free 2-day shipping upgrade. Also expires 12/20.

I can personally attest that their Jewel Toned Silk Pajamas or their Monogrammed Two-Tone Cashmere Scarf will go over big.