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Compare Two Email Lists

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

Níl gá le logáil isteach
— 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

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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.

Conas a Oibríonn sé

1
Cuir isteach
Enter your data into the tool above. Everything stays local to your browser.
2
Próiseas
The tool processes your data instantly in your browser using JavaScript. No server, no waiting.
3
Íosluchtaigh
Get your result instantly. Nothing is stored after you leave the page — complete privacy.

Cén fáth ár gceann a úsáid?

✓Go hiomlán saor in aisce - gan aon chostais i bhfolach, riamh
✓Níl cuntas, ríomhphost ná logáil isteach ag teastáil
✓Ní fhágann comhaid do ghléas riamh
✓Níl aon teorainn le méid comhaid ar bith
✓Gan comhartha uisce ar aon aschur

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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

Ceisteanna Coitianta

Back to Compare Two Lists