This allows you to create graphs of your SellerMail performance.
1) As with other dashlets, you can give it a descriptive title. This is a good idea, especially if you will be making graphs for multiple rules.
2) Select which Email Rules this graph will apply to. Making no selection will give you a graph of all combined Rules. You can add multiple Rules to one graph by simply making multiple selections in the dropdown:
3) Decide on the other, custom settings, such as interval for the graph, color for SENT emails and OPENS.