I want to see the list of bounced emails from the sales insight emails our sales staff is sending out through SFDC. Is there a way to see this through Marketo or through SFDC? (Our reps would actually like to see this themselves, right next to the checkboxes for email opened or clicked in the Sales Insight section)
The Marketo reporting for Sales Insight Email Performance does not contain data for emails delivered or soft/hard bounces.
If you create a Smart List, there's a filter under the "Salesforce" folder for "Sales Email Bounced". I'm not sure if this would include emails sent via MSI, though.
Regarding viewing this information in SFDC:
In Admin under your sync options for Salesforce, you can add "Sales Email Sent" and "Sales Email Received" to update in a lead's activities. It's not the same as Bounced, but your reps would be able to assume that if an email was sent and not received, it's possible that it bounced.