A. It is not possible to have the emails actually come from a persons 3rd party email account (exa: GMail). However, the respond to email address is always set to the email address of the Member (so if someone responds to the email it would respond to their gmail).
Also, it is possible to force it to "look" like it was sent from their email, but we do not advise this as it causes email delivery rates to be lower. Also, it is possible for us to build out a feature allowing it to send the emails through their 3rd party email (we would do the major ones like GMail and Yahoo) as an upgrade request.
