Microsoft Publisher doesn't support double sided emails nor does it
support multiple page emails. You would have to design your own brochure
from scratch as a single page and then go to File > Send Email > Send this
page as message.
Publisher does have some built wizards and designs for email, which are
listed under the new publication task pane (File > New)
--
Brian Kvalheim
Microsoft Publisher MVP
http://www.publishermvps.com
This posting is provided "AS IS" with no warranties, and
confers no rights.