Ran the CSV through our deduper first. Encoded UTF-8 with no character-set surprises in Excel. Bought it as part of a wider waterworks locations united states expansion into United States. One column I'd add next refresh: secondary email.
Appreciate the constructive note, the email/LinkedIn coverage you mentioned is on our list for the next pass. Drop a note via Help → Contact Support and we'll line up a fresh export for you.