Ran the CSV through our deduper first. Encoded UTF-8 with no character-set surprises in Excel. Bought it as the seed list for a primary care clinic queensland, australi outbound push in Australia. One column I'd add next refresh: secondary email.
Thanks for flagging the small gaps, noted on the minor gaps — they're tracked for the next refresh. Drop a note via Help → Contact Support and we'll line up a fresh export for you.