Wirelessly posted (8820)
I thought that was already addressed (that is, leaving the email on the server), but bidaci is right. If your email client is deleting the email from the server after download, it may be possible that BIS is then removing it from the blackberry device. Maybe. It's worth checking out.
If your client downloads and deletes the email before BIS grabs it, that email will never make it to the blackberry in the first place.