Hallmark is really pushing their new paper card service, where you can create and customize a paper card online, then pay them to mail it for you. You can try it for free by using promo code APRILCARD at checkout. Just create your card and choose "I Want Hallmark to Mail My Card For Me." Get your Mother's Day duties out of the way early!
I tried to make an Easter card the last time they offered a promotion like this, and first it censored my swear words out of the card, and then it apparently never sent the thing. So I'm not sure if this offer actually works, but I'll try it again and let you know. If you try it and the card actually arrives, leave a note in the comments!