One very cool thing about these attachments is that if you send an attachment to someone else that uses BeamLink, they can save that attachment onto their Visor (see the icon left of the X).  In essence, secretaries could send calendar entries to executives that are out of the office and their calendar would update itself with the new entry.  Sending an attachment to a normal email address lists out the contents; recipients can see what you sent but would need to manually add that entry to their calendar.

Tap Send to send the message.  If you're in a Full Service area the message will be sent immediately.  I found that  sending to/from a device using the SkyTel device took less than 30 seconds, but sending to an Internet address took up to a few minutes sometimes.