I found a thread in the Cazoomi Community which has the same question I do, but my sync app is Salesforce to Constant Contact. I can't Enable Additional Field Mappings - not all of them seem to be showing up. Please advise.
Thanks for the note and can you share the fields and what object they are on?
In our Person Accounts, we have a field called Relationship with pick-list values. This is how we'd like to sort.
Thanks and I think the best approach is not field mapping as your SyncApps is pulling from Salesforce Person Accounts and in which you could select members based on the Relationship drop-down list using the Marketing List feature.
Sync email marketing data: false
Object type: Contact
Unsubscribe opted-out Contact: true
Sync campaigns/list: true
Marketing list mode: List
Now that you have 1 Sync Profile using Marketing Lists feel free to set up individual Marketing Lists for each Person Account criteria for the drop-down list called Relationship.
Each Marketing List in Salesforce will auto-create the list in Constant Contact as well as populate those members into the Master List you have specified in SyncApps setup screen for Constant Contact.