Withthedevelopmentoftheinternet,moreandmorepeoplesendcardsofdifferentkindswithE-mailontheinternet.Comparingwiththetraditionalcards,thedigitalcardsaremuchmoreinterestingandlively.Therecanbesomepictures,cartoons,flashesanddifferentsounds.Meanwhile,thecardsontheinternetcanbetransmittedataveryhighspeed.Withdifferentaddresses.youcansenddifferentcards.Supposeyouarenotinterestedincards,youcanalsodesignthestyleofyourownwithcertainsoftware.Withthepopularityofthedigitalcardsontheinternet,wecangetridofthetraditionalcardswhicharemadeofpaper.Inthisway,wecansavelotsofwood.Itshouldberegardedasacontributiontothepreservationoftheenvironment.