Over the years I have slowly developed a regular expression that validates most email addresses correctly, assuming they don't use an IP address as the server part. I use it in several PHP programs, and it works most of the time. However, from time to time I get contacted by someone that is having trouble with a site that uses it, and I end up having to make some adjustment (most recently I realiz
The regular expression I receive the most feedback, not to mention “bug” reports on, is the one you’ll find right on this site’s home page: \b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,}\b. This regular expression, I claim, matches any email address. Most of the feedback I get refutes that claim by showing one email address that this regex doesn’t match. Usually, the “bug” report also includes a suggesti
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