In the old Outbound product, it was easy to resend an email if a recipient called in to have it resent due to accidental deletion, spam filtration, etc. All you needed was to go to the Contact Insight control, click the email in question and select "Send now". Then you could select a segment or enter a single email address. and have it resent.

In CI-J, using the tabbableInsightsControl, you can also get to the email, but when clicking "Send now", you can only select segments, not single emails. The individual email resend should also be made available in CI-J, with full tracking.