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Regular Expression Details

Title Test Find Pattern Title
Expression
^([\w\d\-\.]+)@{1}(([\w\d\-]{1,67})|([\w\d\-]+\.[\w\d\-]{1,67}))\.(([a-zA-Z\d]{2,4})(\.[a-zA-Z\d]{2})?)$
Description
This pattern allows standard e-mail addresses (e.g. user@domain.com), sub domains (e.g. user@foo.domain.com), the new two- and four-letter domains (e.g. user@domain.tv and user@domain.name) and country codes (e.g. user@foo.com.us). Also, this patter follows the Network Solutions standard length of 67 characters for top-level domains. The reason I allow numbers to be entered in the domain suffix is for future planning. If you do not want numbers to be able to be added as a domain suffix (e.g. user@domain.123), simply delete the last two occurrences of "\d".
Matches
foo@foo.com | foo@foo-foo.com.au | foo@foo.foo.info
Non-Matches
foo@.com | foo@foo..com | foo@me@.com
Author Rating: The rating for this expression. Laurence O'Donnell
Source
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Existing User Comments

Title: sds
Name: sasd
Date: 6/2/2015 12:50:00 AM
Comment:
w


Title: sds
Name: sasd
Date: 6/2/2015 12:49:23 AM
Comment:
w


Title: Useful Code
Name: Patni - WebManager
Date: 4/9/2009 2:30:26 AM
Comment:
Fine regex pattern to match my use. :)


Title: Useful Code
Name: Patni - WebManager
Date: 4/9/2009 2:29:08 AM
Comment:
Fine regex pattern to match my use. :)


Title: Useful Code
Name: Patni - WebManager
Date: 4/9/2009 2:28:40 AM
Comment:
Fine regex pattern to match my use. :)


Title: Error
Name: frozenfrog
Date: 12/9/2008 3:06:45 AM
Comment:
Allows .@ which is quite common that users enter. Also allows characters other than a...z, 0...9 (which apparently will be allowed in the future)


Title: I think it's good
Name: escanive
Date: 9/8/2008 4:55:30 PM
Comment:
Although it might not accept some of those wacky e-mail adresses mentioned by pinetree, I find this regex pattern to match my use. Thanks.


Title: More valid addresses for which this fails
Name: Tim Lesher
Date: 5/22/2006 2:54:06 PM
Comment:
foo+bar@baz.com


Title: Missing valid parts
Name: Matthew
Date: 2/14/2006 11:49:32 PM
Comment:
This does not match quoted string parts or ip address.


Title: Fails to match the valid email address
Name: The Fred and Barney Comedy Team <fred&barney@stonehenge.com>
Date: 1/26/2005 3:31:18 AM
Comment:
Fails to match the valid email address fred&barney@stonehenge.com


Title: only it doesn't work
Name: pinetree
Date: 6/16/2003 4:00:12 PM
Comment:
Except that per RFC 822 (http://www.w3.org/Protocols/rfc822/Overview.html), the following email addresses are valid but would be trapped as invalid by this code. Specifically, look at Appendix A (http://www.w3.org/Protocols/rfc822/Overview.html#z10), section A.3.3.<br><br> "Some Silly User"@example.com<br> Another'User@example.com<br> Yet/Another/Wacky/User@example.com


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