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Answer: How do I validate an email address?

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Q&A > regular expressions > How do I validate an email address? contributed by greenFox

Recipe 6.19, "Matching a Valid Mail Address", in The Perl Cookbook gives a broader coverage of this topic and is well worth a read. In it, Tom Christiansen refers to his attempt at a regular expression (while admitting that it's less than perfect) which can be found in his script, ckaddr. It is based on a regular expression in Recipe 18.9 of Mastering Regular Expressions. All of this proves (to me at least) just how tricky matching an email address really is.

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