I am just starting to play around with the email campaign tool, and it seems pretty sparse. I would like to be able to save a campaign that I am working on. I might want to set it up and need to go back as I come up with more ideas, or realize I need a new picture. It seems like you cannot save and edit more later.
Also, it looks like you cannot copy a previous message and use it as a new message. This might be useful for a series where much of the message is similar.