I don't know what you mean by "sent from web site".  Outlook will download
anything sent to your Inbox on the server.  Depending on the account type
(probably POP, based on the "yahoo" in the subject), Outlook may not be able
to access any folders iother than Inbox on the server.  POP protocols have
no concept of "folder".  Moreover, if your address is a "yahoo.com" address
and it's a free account as opposed to a paid one, you will not be able to
use Outlook to get your mail without http://ypopsemail.com/ .  Outlook
doesn't care what client you use to send mail.  Mail sent from a Blackberry
to the POP Inbox is just as readily received as any other message from any
other client.