Reconcile two CRM exports without a spreadsheet formula
Last updated: 2026-10-15
Ops teams often pull “all contacts” twice—before and after a campaign, or after a data cleanup. The question is either “who appeared or left?” or “which fields on the same person changed?” Those are two different ListDiff tools.
Path 1 — who appeared or left
Export email or contact id as one column (or extract Col N). Put the older file in List A and the newer in List B.
Path 2 — fields changed on the same ID
Keep the wide CSV. Match on contact id (or email if it is stable). Read Changed for owner, stage, amount, or status edits.
Prep tips
- Strip a header row if you are using list compare and the first line is
email. - Leave case off for emails. Check duplicates before you trust churn counts.
- ListDiff does not log into your CRM—you bring the export. See Is ListDiff safe?.
FAQ
How do I compare two CRM exports?
Membership → list compare. Field edits on the same id → CSV table compare. Unsure? Use which tool.
Does ListDiff connect to my CRM?
No. Paste or upload files you already exported.