How greeting card works?

As per the reports of Greeting card association the Americans give away 7 billion greeting cards each year. They are spending of $7.5 billion dollars each year. When one thinks and hears of greeting cards all that comes to their mind is giving card to birthdays, Christmas or some other occasions. But it is not true you can give greeting cards in order to increase your business and sales. Many business people give greeting cards to their customers in order to have a touch with them. It is one of tool for increasing the business.
The latest trend in internet is sending the e-card or electronic cards. This allows you to send the cards and messages to your friends and family. But most of the people go for greeting cards which are real card, this is to avoid the flooding of the inbox with more mails or sometime the readers will consider that as spam. So if one thinks to refresh the customers you can follow the idea of giving greeting cards.