Email list de-duplicator.
Paste a list of email addresses and strip out the duplicates in seconds. Case is ignored, so Jane@… and jane@… collapse to one, and anything without an @ is skipped. It all runs right here in your browser — nothing is uploaded.
Why de-duplicate before you send
Duplicate addresses creep in whenever lists get merged, exported, and re-imported. Left in place they inflate your counts, waste sending credits, and risk mailing the same person twice from one campaign. Removing exact repeats is the quickest, safest first pass of cleaning an email list — it's lossless (you only drop true copies) and needs no judgement calls, so it's the right thing to do before any heavier hygiene.
- Case-insensitive matching
- Addresses are compared in lowercase, so mixed-case duplicates are caught — the first spelling you pasted is the one that's kept.
- Order preserved
- The cleaned list stays in the order you pasted it, minus the repeats — nothing is re-sorted or rewritten behind your back.
De-duplication is a first step, not verification
Removing duplicates makes a list tidier, but it says nothing about whether the remaining addresses can actually receive mail. A unique address can still be a typo, a long-dead mailbox, or a disposable inbox that will hard-bounce. That's the job of bulk email verification, which checks each address against DNS and the mailbox itself and returns a confidence score. Deduplicate first to cut the volume, then verify what's left so you only send to addresses that resolve.
Email list de-duplicator — FAQ
Verify the deduped list
Once the duplicates are gone, run the unique addresses through full verification to remove the dead ones too — start free with 100 credits, no card required.