I am looking for a solution on this scenerio;
So we bought a couple of lists from different vendors(at different time) last year and we ran campaigns in Marketo for them. Some of them have been synced into SFDC. So now i have combined these lists into one master list to verify their email address via a BriteVerify.
My main question is... what happens if i import the master list into Marketo again? Will they be created as a new lead or be merged with those that were imported last year? Whats the worst that can happen?
I want to monitor the results of this upcoming new campaign via Marketo so i will not be creating any salesforce campaigns or sync into salesforce.