It is not possible to see or edit the content of a bulk email message until the campaign starts sending and that is only if you look at one of the contact records. I had to change mail provider. Now I dont know what is in the campaigns I already built and scheduled, but havent sent, yet. I was told since they were built when the previous service was in place they will still send with that service. So, now I have to cancel them and not only reschedule, but re-create the entire emails, too.