A great feature to have would be dragging and dropping assets, such as emails, lists, and smart lists, from the side bar into the smart list or flow view of a campaign. Often, despite strong naming conventions, it can take time to find the appropriate asset to include. It would be much easier to drag the asset from the already open folder into the current view.
To take it to the next step, without even choosing the field or trigger item, you could drag the asset across and Marketo could provide you with a number of options based on the asset you drag across. For example, you could drag across a list into the smart list view of a smart campaign and be given the options like added to list (trigger), was added to list (field), black listed (field), etc. Alternatively, if you have already chosen a field or trigger you can drag and drop the asset into the select toolbar.
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