You must have Salesforce OAuth enabled, you must have active Salesforce campaigns, you must be set up to export Contacts, and you must have created a Prospect list.
With the new Datanyze Export to Salesforce feature once you have created a Prospect list you can easily sync them directly to Salesforce Campaigns.
1. Select the contacts you would like to export
2. Click Export to Salesforce from the drop-down
3. Choose campaign(s)
4. Add contact to existing account or create new account
5. Click Export button