Reducing repeated checks
Remove duplicate input rows before using a limited verification allowance.
Runs in your browser
Duplicate email remover
Paste a list and keep one copy of each email address. No upload required.
How duplicates are handled
Email addresses are trimmed and compared case-insensitively. The first occurrence is kept. This tool does not verify whether the addresses can receive mail; use the bulk verifier for that.
Put the result to work
Remove repeats without merging different recipients
This tool compares address strings locally. It trims surrounding whitespace and compares domains in lowercase while preserving the local part. It does not verify the remaining addresses.
Paste one list
Separate addresses with new lines, commas or semicolons.
Review the unique count
The output removes repeats under this tool’s comparison rules.
Copy or download
Save the deduplicated text and run verification if you need DNS or mailbox evidence.
Worked examples
What the evidence tells you
Illustrative scenarios, not live results for the addresses or records shown. Open a scenario to see the next action.
01alex@EXAMPLE.com and alex@example.com
One output address
Domain comparison is case-insensitive in this tool.
Next action Keep the resulting spelling.
02Alex@example.com and alex@example.com
Two output addresses
Local-part case is preserved to avoid merging addresses without provider-specific knowledge.
Next action Review only if you know the destination’s rules.
03alex+sales@example.com and alex@example.com
Two output addresses
Plus aliases remain separate even if a provider routes them together.
Next action Keep tags that record source or purpose.
Use it with a purpose
Where this tool fits
Preparing a plain recipient list
Create a unique text list without uploading it to the server. This is not a full CSV record-merging tool.
Before you decide
Questions about this tool
Does it remove dots from Gmail addresses?
No. It preserves dots rather than applying Gmail-specific rules to every domain.
Does it remove invalid addresses?
No. It removes repeated strings. Run syntax or bulk verification afterwards.
Does the pasted list leave my browser?
The duplicate-removal operation runs locally.
