You can use the Mail API in the net.rim.blackberry.api.mail package to manage attachments in incoming email messages and include attachments in outgoing email messages on a BlackBerry® device. An attachment is represented as a separate BodyPart object on a Multipart message.

• Create an attachment handler
  
• Retrieve the contents of an attachment
  
• Retrieve information about an attachment
  
• Send a message with an attachment
  
• Download attachments automatically