How do I show campaign fields on Email Activity reports?

Once you have enabled Stored Email Activity , you can report on data from the Mailchimp Campaign with Email Activity History data. Please use the report type "Mailchimp Email Activities with Mailchimp Campaign." Here are the Salesforce field names most of interest:

• Settings Title - This is the internal name of the Mailchimp campaign
• Settings Subject - This is the subject line of the email
• Settings From Name- This is the campaign sender
• Settings Reply To- This is the campaign reply to email