The custom of sending greeting cards can be traced back to the ancient Chinese, who exchanged messages of good will to celebrate the New Year, and to the early Egyptians, who conveyed their greetings on papyrus scrolls. By the early 15th century, handmade paper greeting cards were being exchanged in Europe. The Germans are known to have printed New Year's greetings from woodcuts as early as 1400, and handmade paper Valentines were being exchanged in various parts of Europe in the early to mid-15th century, with the oldest Valentine in existence being in the British Museum.
These are greeting cards for the budget conscious. There are two common formats for reusable cards. Firstly, there are cards with slits in them positioned to hold pages. Secondly, there are notepad style cards where pages stick to the back of the cards. The pages that have been used for reusable cards can be removed after being received and fresh pages can be used to reuse the cards.