• Text (as .text files)
• Still images (as GIF or JPG files)
• Animated images (as Animated GIF files)
• Audio (as WAV, RMF, MP3, MP4 or Ringtone files)
• Video (as RM, 3GP, or MP4 files)
• Java Applications (as JAR files)
• vCard (business card files)
• vCal (calendar event files)

The sky is the limit so be creative. Would your clients be happy to receive a music file? What video clip would you pass on to your friends?