Solved
Sync to Salesforce only if in system already
Hey all! We currently use the Marketo campaigns to sync activity such as opening an email back to our Salesforce database. However, what we've found is that it isn't ideal because it will add a duplicate to Salesforce as a lead that is already a contact in the system (such a mess to have to deal with!) I want to set it up so that when I trigger my campaign for open emails, it will only sync it to the Salesforce campaign if they are already in Salesforce. I can't find any filters to help with this. Any ideas on what I can use?