Compare Two Email Lists

Find which addresses are new, removed, or shared between two lists.

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List A (0 lines)

List B (0 lines)

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💡 Paste a list in each box (one item per line). Only in A = items missing from B · In both = the overlap · Only in B = items missing from A · All (unique) = combined, de-duplicated. Everything runs in your browser.

email lists tips

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"Only in A" finds subscribers who unsubscribed; "Only in B" finds new sign-ups since the last export.

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Turn on "Ignore case" so Bob@x.com and bob@x.com are treated as the same address.

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"In both" shows who's on both lists — useful for de-duplicating before a send.

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Email lists are compared in your browser — never uploaded.

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Enter your data into the tool above. Everything stays local to your browser.

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The tool processes your data instantly in your browser using JavaScript. No server, no waiting.

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Get your result instantly. Nothing is stored after you leave the page — complete privacy.

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✓Sepenuhnya gratis — tidak ada biaya tersembunyi, selamanya

✓Tidak perlu akun, email, atau login

✓File tidak pernah meninggalkan perangkat Anda

✓Tidak ada batasan ukuran file sama sekali

✓Tidak ada tanda air pada output apa pun

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Find Differences Between Two Data Sets

Compare two lists of IDs, SKUs, or records.

🧹

Merge and De-duplicate Two Lists

Combine two lists into one unique list.

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Find the Overlap Between Two Lists

See which items appear in both lists (the intersec

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Find What's Missing Between Lists

Spot items in one checklist that are absent from a

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