e-cards with animation and personalisation (woo commerce and mailchimp data)

Hi, We are creating a site for a charity where they can order e-cards as gifts. The site is wordpress using woo commerce plug ins. The individual ordering will complete an order including personalised message to the recipient. they place the order and select a date for it to be received (this is all already created). What we need help with is the creation of the e-card. We need solutions so that the recipient receives the e-card that some how is animated (an envelopes that unwraps) to reveal the card itself that then opens to the personalised message. Not sure of best way to do this but needs to be as seamless as possible. The animation can be very simple. I expect the recipient would need to click on something in the e-shot to launch the animation but we would somehow need it to end on a static card then can be read. Very rough sketch attached of basic idea.