SOLUTION
Setting up the Pardot Google Analytics Connector to track the UTM campaign and source parameters in Pardot. The client can see from which campaign and source the lead has come, manage audience segmentation by the campaign (once the campaign is Black Friday, we added prospects in a static list using the automation rule) and sent an email on a specific date to an audience. Also, we used UTM hidden fields on forms.
To connect Pardot with LinkedIn the Vimera team has developed the Pardot LinkedIn Connector to schedule the day and time of posting. Now all social activities can be managed and checked.