Sorry for my late reply. I finally found the feature or subscribing the the page edits.
I don't really understand how emailing content onto the website would work. Where would the content appear? Could you explain further your ideas here?
Sorry I was just remembering on something like blogger. which we could email to a certain address. Also some mailing lists seem to have a way to post directly to a forum. Maybe putting some comands in the subjectline.
I guess it is mainly for the weblog part.