0 a greetings card (= message sent to someone to celebrate an occasion such as a birthday) that you can see on a website to which you are directed by an e-mail:
1 a message used to promote a business, that you see on a website to which you are directed by an e-mail:
2 an electronic business card:
Crediting the album release, the band's website released a promotional e-card with full-length previews of the songs.
Fare discount is available when pre-paid e-card is used.
The song was made into an e-card in 2004.