Marketo Outlook Add-in - Managing Sales Emails

I have made several emails available within the sales insight outlook add-in. I went in to try and to manage these emails (delete old ones, add new ones, etc.) and cannot find out an easy to way to delete old emails (unless I go into each email editor and change the email settings). Is there any easy way to manage all emails that are pushed to the outlook add-in? 

Erin