Marketo Sales Insight Email Alert question

Not within the module itself since it's intended to be a raw feed of emails/engagement.

However, if you're trying to basically list out either specific emails or like, only the emails a contact engaged with, you could write those engagements as completed tasks on a contact's activity record (i.e., they click the email, you write the task in your set success flow step), and then the "important" emails are not in the MSI pane but on the contact record itself?

Just an idea!