Before using Unite when I selected the option to delete email on mailbox and handheld, it did exactly that. Now with Unite, even when I select that option, email is only deleted on my BB. Is there any way to get it to delete on the mailbox also?

Since no one has answered, I will answer my own post. According to the BB tech team that feature is not supported when using Unite!

That sucks, since it did help me keep my Outlook Inbox clear.