Email Address Extractor
Find common email addresses in a message or list and return unique matches.
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Find common dot-atom email addresses in pasted text and list each once, keeping the first spelling. Domain matching ignores case; local-part matching preserves case. Paste text and run the extractor. It finds common addresses such as name+tag@example.com and returns each once. Domain-name case is ignored for duplicate matching, but local-part case is preserved. It does not verify whether an address exists. This pragmatic ASCII matcher does not support every RFC form, quoted local-parts or internationalized addresses, and cannot confirm that a mailbox exists or can receive mail.
Text containing email addresses
Ada <ada@example.com>, Sam <sam@example.org>; ada@example.com
Expected output
ada@example.com sam@example.org
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Quick answer
Find common dot-atom email addresses in pasted text and list each once, keeping the first spelling. Domain matching ignores case; local-part matching preserves case.
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How to use it
Paste text and run the extractor. It finds common addresses such as name+tag@example.com and returns each once. Domain-name case is ignored for duplicate matching, but local-part case is preserved. It does not verify whether an address exists.
Limits
This pragmatic ASCII matcher does not support every RFC form, quoted local-parts or internationalized addresses, and cannot confirm that a mailbox exists or can receive mail.
Frequently asked questions
Does it validate that an address works?
No. It recognizes common ASCII email syntax in text; it does not check for a real mailbox or deliverability.
How are duplicate addresses compared?
The domain is compared without case, while the local part before @ keeps its case, as required for SMTP mailbox handling.
Sources and references
These references document the cited standard or browser API; they do not validate the tool’s output.