RegExLib.com - The first Regular Expression Library on the Web!

Title	Test Details Pattern Title
Expression	^\w+[\w-\.]*\@\w+((-\w+)|(\w*))\.[a-z]{2,3}$
Description	Email validation. With this short expression you can validate for proper email format. It's short and accurate.
Matches	bob-smith@foo.com | bob.smith@foo.com | bob_smith@foo.com
Non-Matches	-smith@foo.com | .smith@foo.com | smith@foo_com
Author	Rating: Eric Lebetsamer

Title	Test Details Pattern Title
Expression	(\w+?@\w+?\x2E.+)
Description	Validates an email address
Matches	bob@vsnl.com
Non-Matches	[AABB]
Author	Rating: Prasad DV

Title	Test Details Pattern Title
Expression	^[\w\.=-]+@[\w\.-]+\.[\w]{2,3}$
Description	Much simpler email expression. This one forces a length of 2 or 3, which fits current specs, but you may need to alter the end as this one allows all numerals on the .COM section.
Matches	a@a.com | a@a.com.au | a@a.au
Non-Matches	word | word@ | @word
Author	Rating: Gregory Beamer

Title	Test Details Pattern Title
Expression	[\w-]+@([\w-]+\.)+[\w-]+
Description	Yet another simple email validator expression.
Matches	joe@aol.com | a@b.c
Non-Matches	asdf | 1234
Author	Rating: Steven Smith

Title	Test Details Pattern Title
Expression	(\w[-._\w]*\w@\w[-._\w]*\w\.\w{2,3})
Description	This is my all-time favourite e-mail validator. I've used it for years and it's never failed me :-)
Matches	foo@bar.com | foobar@foobar.com.au
Non-Matches	foo@bar | $$$@bar.com
Author	Rating: Darren Neimke

Title	Test Details Pattern Title
Expression	^((\"[^\"\f\n\r\t\v\b]+\")|([\w\!\#\$\%\&\'\*\+\-\~\/\^\`\|\{\}]+(\.[\w\!\#\$\%\&\'\*\+\-\~\/\^\`\|\{\}]+)*))@((\[(((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9])))\])|(((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9])))|((([A-Za-z0-9\-])+\.)+[A-Za-z\-]+))$
Description	Email address validator. Should cover most of RFC 822, including unusual (but still valid) addresses. Does not restrict the top level domain size, but you're better off doing an nslookup or similar if you absolutely must have a valid domain. Accepts IP Addresses instead of the domain, with or without brackets. Believe it or not, this one is valid: !#$%^&*-+~/'`|{}@xyz.com Sorry looks like this site is mangling the quote and ampersand characters - you'll have to fix that yourself.
Matches	/A/Wacky/User@weirdos.com | bob.builder@[1.1.1.1] | "blah b. blahburger"@blah.com
Non-Matches	./A/Wacky/User@weirdos.com | bob.builder@[256.1.1.1] | -"blah b. blahburger"@blah.com
Author	Rating: Roger Ramjet

Title	Test Details Pattern Title
Expression	^(([-\w \.]+)|(""[-\w \.]+"") )?<([\w\-\.]+)@((\[([0-9]{1,3}\.){3}[0-9]{1,3}\])|(([\w\-]+\.)+)([a-zA-Z]{2,4}))>$
Description	Expression 2 or 2 for matching email address syntax. This one matches the <angle bracket syntax>.
Matches	<ab@cd.ef> | bob A. jones <ab@cd.ef> | bob A. jones <ab@[1.1.1.111]>
Non-Matches	ab@cd.ef | "bob A. jones <ab@cd.ef> | bob A. jones <ab@1.1.1.111>
Author	Rating: Not yet rated. David Lott

Title	Test Details Pattern Title
Expression	^([\w\-\.]+)@((\[([0-9]{1,3}\.){3}[0-9]{1,3}\])|(([\w\-]+\.)+)([a-zA-Z]{2,4}))$
Description	Expression 1 of 2 used to check email address syntax.
Matches	bob@somewhere.com | bob.jones@[1.1.1.1] | bob@a.b.c.d.info
Non-Matches	bob@com | bob.jones@some.where | bob@1.1.1.123
Author	Rating: Not yet rated. David Lott

Title	Test Details Pattern Title
Expression	^((?<DRIVE>[a-z]:)|(\\\\(?<SERVER>[0-9]*[a-z\-][a-z0-9\-]*)\\(?<VOLUME>[^\.\x01-\x1F\\""\*\?<>:|\\/][^\x01-\x1F\\""\*\?|><:\\/]*)))?(?<FOLDERS>(?<FOLDER1>(\.|(\.\.)|([^\.\x01-\x1F\\""\*\?|><:\\/][^\x01-\x1F\\""\*\?<>:|\\/]*)))?(?<FOLDERm>[\\/](\.|(\.\.)|([^\.\x01-\x1F\\""\*\?|><:\\/][^\x01-\x1F\\""\*\?<>:|\\/]*)))*)?[\\/]?$
Description	Verify "well formed-ness" of DOS or UNC paths. Passed over 170 NUnit test, (took 3 complete rewrites) Components of a path: DRIVE:=[a-z]: SERVER:=[0-9]*[a-z\-][a-z0-9\-]* FNAME:=[^\.\x01-\x1F\\""\*\?<>:|\\/][^\x01-\x1F\\""\*\?<>:|\\/]* VOLUME:=FNAME UNC:=\\SERVER\VOLUME ROOT:=(DRIVE|UNC) FOLDER:=.|..|FNAME FOLDERS:=FOLDER?([\]FOLDER)*[\]? PATH:=^ROOT?FOLDERS?$
Matches	his is a very 'long' folder\that is.part of 2 folders. | b\c\..\x. | \\Dads\Mp3\FileName1\.\TestDir2
Non-Matches	\\1.dads\C | \. folder\ | .ext
Author	Rating: Not yet rated. Tristen Fielding

Title	Test Details Pattern Title
Expression	^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$
Description	This expression matches email addresses, and checks that they are of the proper form. It checks to ensure the top level domain is between 2 and 4 characters long, but does not check the specific domain against a list (especially since there are so many of them now).
Matches	joe@aol.com | joe@wrox.co.uk | joe@domain.info
Non-Matches	a@b | notanemail | joe@@.
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	^[\w-]+(\.[\w-]+)*@([a-z0-9-]+(\.[a-z0-9-]+)*?\.[a-z]{2,6}|(\d{1,3}\.){3}\d{1,3})(:\d{4})?$
Description	Matches a valid email address including ip's which are rarely used. Allows for a-z0-9_.- in the username, but not ending in a full stop i.e user.@domain.com is invalid and a-z0-9- as the optional sub domain(s) with domain name and a 2-7 char (a-z) tld allowing for short tld's like ca and new ones like museum.
Matches	username@domain.com | u-s_e.r1@s-ub2.domain-name.museum:8080 | user_name@123.123.123.12
Non-Matches	user@domain | user@domain.c | user.@domain.com
Author	Rating: Not yet rated. nick bennett

Title	Test Details Pattern Title
Expression	\w+[\w-\.]*\@\w+((-\w+)|(\w*))\.[a-z]{2,3}$|^([0-9a-zA-Z'\.]{3,40})\*|([0-9a-zA-Z'\.]+)@([0-9a-zA-Z']+)\.([0-9a-zA-Z']+)$|([0-9a-zA-Z'\.]+)@([0-9a-zA-Z']+)\*+$|^$
Description	This regular expression is for admitting wild card searches on Emails the wild card character is * and in my case will only allow to do the search when the * is place after the first 3 alphanumeric characters. If you need to modify this behavior change the {3,40} to {n,m} where n is how many characters before the * and m is the total number if characters.
Matches	jdh* | jss.js* | juan.sk@micro.com
Non-Matches	j* | js*
Author	Rating: Not yet rated. Julio de la Yncera

Title	Test Details Pattern Title
Expression	^\W{0,5}[Rr]e:\W[a-zA-Z0-9]{1,10},\W[a-z]{1,10}\W[a-z]{1,10}\W[a-z]{1,10}
Description	Simple email subject line matching. This regex matches those really annoying emails that begin with 0-5 spaces, followed by a fake reply, contain a random string of letters (usually CAPITALIZED) from 1-10 characters long followed by a comma, and then followed by three lower-case words each from 1-10 characters long. In my experience, the 3 trailing words are always lower-case. the words make begin with, contain, or end in common punctuation marks.
Matches	re: ASDFG, hours among lifestyle | Re: ASD34SSDF, i can't believe | Re: VZWENKS, the coffin brogade
Non-Matches	re: ASDFGASFDASDF, Hours among lifestyle | Re: ASD34SSDF, I can't believe it's true
Author	Rating: Not yet rated. Joseph Lundgren

Title	Test Details Pattern Title
Expression	^((([a-zA-Z\'\.\-]+)?)((,\s*([a-zA-Z]+))?)|([A-Za-z0-9](([_\.\-]?[a-zA-Z0-9]+)*)@([A-Za-z0-9]+)(([\.\-]?[a-zA-Z0-9]+)*)\.([A-Za-z]{2,})))(;{1}(((([a-zA-Z\'\.\-]+){1})((,\s*([a-zA-Z]+))?))|([A-Za-z0-9](([_\.\-]?[a-zA-Z0-9]+)*)@([A-Za-z0-9]+)(([\.\-]?[a-zA-Z0-9]+)*)\.([A-Za-z]{2,})){1}))*$
Description	This regular expression matches a series of names and/or email addresses much like you would do in Outlook's To field (e.g. To: wrohrbach@carlson.com;miles, er;roemer;lagrander, nitra). The first entry must be a name (in the form of last name followed by a comma and first name) or an email address. The following entries are a semicolon followed by one name or email address. The comma and first name are optional components of the name part.
Matches	rohrbach | rohrbach, wi | rohrbach, wi;roemer;emiles@carlson.com;lagrander, ni
Non-Matches	rohrbach;miles; | rohrbach, wa; | wrohrbach@carlson.com;miles;;
Author	Rating: Not yet rated. William Rohrbach

Title	Test Details Pattern Title
Expression	^([a-zA-Z0-9_\-\.]+)@([a-zA-Z0-9_\-\.]+)\.([a-zA-Z]{2,5})$
Description	Easy expression that checks for valid email addresses.
Matches	somthing@someserver.com | firstname.lastname@mailserver.domain.com | username-something@some-server.
Non-Matches	username@someserver.domain.c | somename@server.domain-com | someone@something.se_eo
Author	Rating: Not yet rated. Zrekam makerZ

Title	Test Details Pattern Title
Expression	\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*([,;]\s*\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*)*
Description	Validates 1 or more email addresses. Email addresses can be delimited with either comma or semicolon. White space is allowed after delimiter, but not necessary. I needed this to allow my users to specify multiple email addresses if they choose to do so.
Matches	lewis@moten.com | lewis@moten.com, me@lewismoten.com | lewis@moten.com;me@lewismoten.com
Non-Matches	lewis@@moten.com
Author	Rating: Not yet rated. Lewis Moten

Title	Test Details Pattern Title
Expression	^((?:(?:(?:\w[\.\-\+]?)*)\w)+)\@((?:(?:(?:\w[\.\-\+]?){0,62})\w)+)\.(\w{2,6})$
Description	Not a 100% email validation. It doesn't work with IP-Adresses, but it's good for most common cases. At least I hope so.
Matches	a-b-c@d-e-f.com | a@b.ce | Me@my.museum
Non-Matches	abc@def.g | a--b@c--d.fe | -abc@-def-.def
Author	Rating: Not yet rated. Sebastian Hiller

Title	Test Details Pattern Title
Expression	^.+@[^\.].*\.[a-z]{2,}$
Description	Most email validation regexps are outdated and ignore the fact that domain names can contain any foreign character these days, as well as the fact that anything before @ is acceptable. The only roman alphabet restriction is in the TLD, which for a long time has been more than 2 or 3 chars (.museum, .aero, .info). The only dot restriction is that . cannot be placed directly after @. This pattern captures any valid, reallife email adress.
Matches	whatever@somewhere.museum | foreignchars@myforeigncharsdomain.nu | me+mysomething@mydomain.com
Non-Matches	a@b.c | me@.my.com | a@b.comFOREIGNCHAR
Author	Rating: Not yet rated. Thor Larholm