Deleting leads from Marketo only - How to handle possible duplicates or syncing issues?
Hey, Due to limitations of number of records in Marketo we thought about mass delete some of our old leads only in Marketo. We have a sync rule in place to make sure these leads will not be re-synced from Salesforce but if these leads will happen to come back and fill out any form on our website, How can we make sure a duplicate record will not be created or there will not be a syncing issue because Salesforce will return an error because there's already a record with this email address?
Thank you.