We would like to use Sales Insight to send an email to a group of people in Sales Force, but we want the email to reflect on each individuals rep record in Sales Force. Is it possible to do so? Will the sent email be refelected in each person's contact history?
Yes, as long as you have your Marketo Admin settings configured to log events for "Was Sent Sales Email", then the email send should be logged in each person's contact history. Keep in mind that it may take a little while for the activity to show up, depending on the frequency of your Marketo-SFDC API calls.