Is there a tool available to compare two lists? We are looking to dedupe, as well as account matching against two lists at once.
Excel should be able to do this.
Depends where the data is.
Quick method of doing this would be creating a smart list with two filters inside it "Member of List 1" "Not a Member of List 2". It will resolve your problem upto some extent. Apart from this, we have our own De-dupe product for account matching and for bigger databases. You can contact us at rahulv@grazitti.com for more information on this. We would be happy to help you!