Originally Posted by jbairdjr
If you have an email message sent from a BIS user, the user name will be the prefix of the email address.
In other words
That's not necessarily true. The part of your BIS email address before the @ symbol and your user ID can be totally different (mine are). If they're not the same and you don't recall your BIS user ID you would need to contact your carrier's BB/data support group.