I am looking to shut down a Mailchimp account and want to ensure all unsubscribes are unsubscribed in Pipedrive / Campaigns. Can I do this with a spreadsheet upload? Also I don't want new records created if there are no matches... Please assist! Thanks !

I have my answers now and the pain is that I can't upload a spreadsheet only matching with email address, you have to import "name" fields... which for many records I don't have... also the ones that I do, I don't actually want to override that field as name data in pipedrive is likely to be more accurate.