My 60-Second List Cleanup Pipeline

How to clean a messy CSV or line list in under a minute with Tools.Town List Lab — expand, dedupe, sort, split.

Tools.Town Team 14 August 2026 4 min read

Most list imports fail because of blanks, duplicates, and bad order — not because the mailer is broken.

Recipe: open List Lab → paste → keep Expand + Normalize + Dedupe + Sort on → optional Split → copy.

That is the whole List Ops cluster in one screen. For a longer checklist see List cleanup before import.

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Frequently Asked Questions

Do I need an account?

No — List Lab runs in the browser.

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