What Ive learned on free e-cards
When you will send an ecard to a person and you want to send him a card on a specific date and time then you can mention that on the card as well. In this way the website will automatically send your card to the specified person on a particular date and you will be told through an email or deliver report. On some websites you also get the message via email when the receiver will open the ecard. This shows that ecards give the best way of greeting anyone on any occasion. From social point of view; ecards can make us socially responsible.