Grtz.net e-cards are different from other e-cards in two ways; design-wise and tech-wise.
What a different design means you can see by looking at the e-cards on this page.
A different technique means the cards are mailed directly to the recipient.
So no fuss with long, difficult codes, or having to collect a card within a fixed period of time.
Just receive the e-mail and directly view the attached card.