Hello Charlotte_County ,
Since email programs partially rewrite email coding when forwarding them, we can't control what will happen to emails' formatting when it's forwarded. Sometimes nothing changes, sometimes images, text, and the entire structure are altered. In general, we don't recommend forwarding emails, since only the original recipients will be coded for various reporting and compliance elements - opens, clicks, spam reports, unsubscribes, etc.
While constructing an email in the CPE builder, you should see an option to add a network for the social share block, with one of the options being "Email." When a recipient clicks that button, it'll start a new email in the recipient's email client with the share url for your campaign. Otherwise, we'd recommend simply getting permission from the recipients of the forwards to just email them directly.
See also:
Display Issues ā Why does my email look different when received?