What is an ecard?. Basically an e-card is an electronic greeting that is sent via the Internet. E-cards usually include animations and music. These are usually sent to friends and family and also business associates. People who want to send e-cards just have to visit any number of sites that will provide the user with a large selection of electronic greeting cards. The person then from the selection available will pick a card and will be able to personalize the car with their own messages.