Compare Two Email Lists
Find which addresses are new, removed, or shared between two lists.
— no items —
💡 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
"Only in A" finds subscribers who unsubscribed; "Only in B" finds new sign-ups since the last export.
Turn on "Ignore case" so Bob@x.com and bob@x.com are treated as the same address.
"In both" shows who's on both lists — useful for de-duplicating before a send.
Email lists are compared in your browser — never uploaded.
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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.
Find the Overlap Between Two Lists
See which items appear in both lists (the intersec
Find What's Missing Between Lists
Spot items in one checklist that are absent from a