38 regular expressions found in this category!
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Pattern Title
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| Expression |
^((?:(?:(?:[a-zA-Z0-9][\.\-\+_]?)*)[a-zA-Z0-9])+)\@((?:(?:(?:[a-zA-Z0-9][\.\-_]?){0,62})[a-zA-Z0-9])+)\.([a-zA-Z0-9]{2,6})$ |
| Description |
Captures Submatches, problem:domainname length can be longer than 64 chars, because every [a-zA-Z0-9][\.\-_] is only countet as one char. |
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| Author |
Rating:
Sebastian Hiller
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^.+@[^\.].*\.[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Most email validation regexps are outdated and ignore the fact that domain names can contain any foreign character these days, as well as the fact that anything before @ is acceptable.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. |
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Rating:
Thor Larholm
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^(([a-zA-Z0-9_\-\.]+)@([a-zA-Z0-9_\-\.]+)\.([a-zA-Z]{2,5}){1,25})+([;.](([a-zA-Z0-9_\-\.]+)@([a-zA-Z0-9_\-\.]+)\.([a-zA-Z]{2,5}){1,25})+)*$ |
| Description |
this will accept multiple email ids separated only by semi-colons (anyway u can change it). |
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narendiran dorairaj
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(?<user>(?:(?:[^ \t\(\)\<\>@,;\:\\\"\.\[\]\r\n]+)|(?:\"(?:(?:[^\"\\\r\n])|(?:\\.))*\"))(?:\.(?:(?:[^ \t\(\)\<\>@,;\:\\\"\.\[\]\r\n]+)|(?:\"(?:(?:[^\"\\\r\n])|(?:\\.))*\")))*)@(?<domain>(?:(?:[^ \t\(\)\<\>@,;\:\\\"\.\[\]\r\n]+)|(?:\[(?:(?:[^\[\]\\\r\n])|(?:\\.))*\]))(?:\.(?:(?:[^ \t\(\)\<\>@,;\:\\\"\.\[\]\r\n]+)|(?:\[(?:(?:[^\[\]\\\r\n])|(?:\\.))*\])))*) |
| Description |
Validates email addresses according to the RFC 822 specification. The only exception is the exclusion of control characters, which should be sufficient for human input from a keyboard. |
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"TravisGray"extra@ domain.biz |
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Trevor Green
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| Expression |
^[a-zA-Z]+(([\'\,\.\- ][a-zA-Z ])?[a-zA-Z]*)*\s+<(\w[-._\w]*\w@\w[-._\w]*\w\.\w{2,3})>$|^(\w[-._\w]*\w@\w[-._\w]*\w\.\w{2,3})$ |
| Description |
This Works good until we want a multiple email address validator, I am working on it to make it work with the multiple email address, If anyone can work on this part as to validate a multiple email address then that will produce a very good expression, i think the best of this kind. AIM - to Validate Mohit < [email protected]>; Rohit < [email protected]>; .........(any number of times) |
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Rating:
Mohit Yadav
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Email - Overly Simple
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^\w+@[a-zA-Z_]+?\.[a-zA-Z]{2,3}$ |
| Description |
Simple email expression. Doesn't allow numbers in the domain name and doesn't allow for top level domains that are less than 2 or more than 3 letters (which is fine until they allow more). Doesn't handle multiple "." in the domain ( [email protected]). |
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Steven Smith
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^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$ |
| Description |
Email validator that adheres directly to the specification for email address naming. It allows for everything from ipaddress and country-code domains, to very rare characters in the username. |
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joe | @foo.com | a@a |
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Andy Smith
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^([a-zA-Z0-9_\-\.]+)@([a-zA-Z0-9_\-\.]+)\.([a-zA-Z]{2,5})$ |
| Description |
Easy expression that checks for valid email addresses. |
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Zrekam makerZ
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^[A-Za-z0-9](([_\.\-]?[a-zA-Z0-9]+)*)@([A-Za-z0-9]+)(([\.\-]?[a-zA-Z0-9]+)*)\.([A-Za-z]{2,})$ |
| Description |
does not allow IP for domain name : [email protected]
does not allow litteral addresses "hello, how are you?"@world.com
allows numeric domain names
after the last "." minimum 2 letters |
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Rating:
bilou mcgyver
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^([0-9a-zA-Z]+[-._+&])*[0-9a-zA-Z]+@([-0-9a-zA-Z]+[.])+[a-zA-Z]{2,6}$ |
| Description |
A short and sweet email address validator. Checks that the username starts and ends with an alphanumeric character, allows a few non-repeating 'special characters' (namely -, ., _, +, &) and checks for a sensible domain name (2-6 character TLD required). Some unconventional, yet technically valid, addresses will not be matched, but this is only a simple expression ;-) |
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Luke Arms
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(\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 :-) |
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Rating:
Darren Neimke
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^[\w-]+(?:\.[\w-]+)*@(?:[\w-]+\.)+[a-zA-Z]{2,7}$ |
| Description |
Matches 99.99% of e-mail addresses (excludes IP e-mails, which are rarely used). The {2,7} at the end leaves space for top level domains as short as .ca but leaves room for new ones like .museum, etc. The ?: notation is a perl non-capturing notation, and can be removed safely for non-perl-compatible languages. See also email. |
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| Author |
Rating:
J. Washam
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| Expression |
^(([A-Za-z0-9]+_+)|([A-Za-z0-9]+\-+)|([A-Za-z0-9]+\.+)|([A-Za-z0-9]+\++))*[A-Za-z0-9]+@((\w+\-+)|(\w+\.))*\w{1,63}\.[a-zA-Z]{2,6}$ |
| Description |
It verifies that: - Only letters, numbers and email acceptable symbols (+, _, -, .) are allowed - No two different symbols may follow each other - Cannot begin with a symbol - Ending domain must be at least 2 letters - Supports subdomains - TLD must be between 2 and 6 letters (Ex: .ca, .museum) - Only (-) and (.) symbols are allowed in domain, but not consecutively.
Problems:
See comments below |
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Rating:
Gavin Sharp
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^([\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. |
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| Author |
Rating:
David Lott
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^[_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)*@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*\.(([0-9]{1,3})|([a-zA-Z]{2,3})|(aero|coop|info|museum|name))$ |
| Description |
Matches e-mail addresses, including some of the newer top-level-domain extensions, such as info, museum, name, etc. Also allows for emails tied directly to IP addresses. |
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Rating:
David Huyck
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^[\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. |
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word | word@ | @word |
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Rating:
Gregory Beamer
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^(([-\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>. |
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| Author |
Rating:
David Lott
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^[A-Za-z0-9](([_\.\-]?[a-zA-Z0-9]+)*)@([A-Za-z0-9]+)(([\.\-]?[a-zA-Z0-9]+)*)\.([A-Za-z]{2,})$ |
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dot_dot@dot_i.com |
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Rating:
mahesh mandhare
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Email
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| Expression |
^([0-9a-zA-Z]([-.\w]*[0-9a-zA-Z])*@([0-9a-zA-Z][-\w]*[0-9a-zA-Z]\.)+[a-zA-Z]{2,9})$ |
| Description |
regex to validate email address
noteworthy:
(1) It allows usernames with 1 or 2 alphanum characters, or 3+ chars can have -._ in the middle. username may NOT start/end with -._ or any other non alphanumeric character.
(2) It allows heirarchical domain names (e.g. [email protected]). Similar -._ placement rules there.
(3) It allows 2-9 character alphabetic-only TLDs (that oughta cover museum and adnauseum :>).
(4) No IP email addresses though -- I wouldn't Want to accept that kind of address. |
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| Author |
Rating:
Rob Eberhardt
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