In order to effectively link email marketing campaigns to website KPIs such as visits, pageviews, etc., the one parameter that makes this analysis possible is a "Sent Date" field for the email campaigns. Case in point, if one launches an email campaign on a particular day and there is a corresponding peak in web activity that same day such as an increase in visits, then we can attribute that increased web activity to the email.
However, I wish when I exported email performance reports from Marketo, that a "Sent Date" field could be associated with emails that are sent 1 time such as those you see with programs and streams. I am not too concerned about automatic email notifications that result from form fill outs for example but just those emails that are indeed campaigns. Through analysis done either through spreadsheets or business intelligence tools such as Tableau, one can link all of the information together to show campaign-specific impact on website analytics just by having the email sent date and the Google Analytics activity date. Without the email sent date though, there is no chance to link the data, aside from manually creating a column in your spreadsheet and entering the date yourself.
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