Recently updated GW Mobility to version 1.2 (579) plus the Oct. patch file. Went in and unchecked the "Block Hidden Attachments" option, which apparently is required if you want your devices to display correctly HTML messages. Restarted Datasync service. Now, what I am getting is a "mime.822" file attachment that cannot be read by my iPhone 4, (iOS 5) and thus I still do not have HTML capability. Is there anything else that I am missing here? Thanks.