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Just copy and paste the email regex below for the language of your choice. Feeling hardcore (or crazy, you decide)? Read the official RFC 5322, or you can check out this Email Validation Summary.Note there is no perfect email regex, hence the 99.99%.. General Email Regex (RFC 5322 Official Standard) REGULAR EXPRESSIONS CHEAT SHEET Anchors ^ Start of string, or start of line in multi-line pattern \A Start of string $ End of string, or end of line in multi-line pattern \Z End of string \b Word boundary \B Not word boundary \< Start of word \> End of word Character Classes \c Control character \s Whitespace \S
ONLINE EMAIL EXTRACTOR Extract email addresses from any text with this free utility. Simply copy, paste and start extracting. Please use this tool responsibly. DO NOT use this tool for spam. Copy text from any source and paste it into here. Then click extract button. Emails extracted: Extract REDUCE MISSPELLED EMAILS By Verifying Mail Domain Using Mailcheck For a demo, enter a@hotmale.com or b@gmail.co in the field below: Mailcheck offers user-misspelled email address suggestions for second and top level domains. For example, when a user types in "user@hotmail.cmo", "hotmail.com" will be suggested. Similarly, if only the second level domain is misspelled, it will be corrected REGEX VISUALIZER (NEW!) Enter Javascript style regular expression and hit Display DisplayPermalink
EMAIL VALIDATION SUMMARY Here’s a list of the principal RFC texts about email addresses and the SMTP standard: RFC 821 RFC 822 RFC 1035 RFC 1123 RFC 2821 RFC 2822 (October, 2001) RFC 3696 RFC 4291 RFC 5321 RFC 5322 RFC 5952 (August, 2010) The summary is based largely on RFC EMAIL ADDRESS REGULAR EXPRESSION THAT 99.99% WORKS.EMAIL VALIDATION SUMMARYONLINE EMAIL EXTRACTORREDUCE MISSPELLED EMAILSREGEX VISUALIZERNEW!
Just copy and paste the email regex below for the language of your choice. Feeling hardcore (or crazy, you decide)? Read the official RFC 5322, or you can check out this Email Validation Summary.Note there is no perfect email regex, hence the 99.99%.. General Email Regex (RFC 5322 Official Standard) REGULAR EXPRESSIONS CHEAT SHEET Anchors ^ Start of string, or start of line in multi-line pattern \A Start of string $ End of string, or end of line in multi-line pattern \Z End of string \b Word boundary \B Not word boundary \< Start of word \> End of word Character Classes \c Control character \s Whitespace \S
ONLINE EMAIL EXTRACTOR Extract email addresses from any text with this free utility. Simply copy, paste and start extracting. Please use this tool responsibly. DO NOT use this tool for spam. Copy text from any source and paste it into here. Then click extract button. Emails extracted: Extract REDUCE MISSPELLED EMAILS By Verifying Mail Domain Using Mailcheck For a demo, enter a@hotmale.com or b@gmail.co in the field below: Mailcheck offers user-misspelled email address suggestions for second and top level domains. For example, when a user types in "user@hotmail.cmo", "hotmail.com" will be suggested. Similarly, if only the second level domain is misspelled, it will be corrected REGEX VISUALIZER (NEW!) Enter Javascript style regular expression and hit Display DisplayPermalink
EMAIL VALIDATION SUMMARY Here’s a list of the principal RFC texts about email addresses and the SMTP standard: RFC 821 RFC 822 RFC 1035 RFC 1123 RFC 2821 RFC 2822 (October, 2001) RFC 3696 RFC 4291 RFC 5321 RFC 5322 RFC 5952 (August, 2010) The summary is based largely on RFC EMAIL ADDRESS REGULAR EXPRESSION THAT 99.99% WORKS. Just copy and paste the email regex below for the language of your choice. Feeling hardcore (or crazy, you decide)? Read the official RFC 5322, or you can check out this Email Validation Summary.Note there is no perfect email regex, hence the 99.99%.. General Email Regex (RFC 5322 Official Standard) REGULAR EXPRESSIONS CHEAT SHEET Anchors ^ Start of string, or start of line in multi-line pattern \A Start of string $ End of string, or end of line in multi-line pattern \Z End of string \b Word boundary \B Not word boundary \< Start of word \> End of word Character Classes \c Control character \s Whitespace \S
ONLINE EMAIL EXTRACTOR Extract email addresses from any text with this free utility. Simply copy, paste and start extracting. Please use this tool responsibly. DO NOT use this tool for spam. Copy text from any source and paste it into here. Then click extract button. Emails extracted: Extract EMAIL VALIDATION SUMMARY Here’s a list of the principal RFC texts about email addresses and the SMTP standard: RFC 821 RFC 822 RFC 1035 RFC 1123 RFC 2821 RFC 2822 (October, 2001) RFC 3696 RFC 4291 RFC 5321 RFC 5322 RFC 5952 (August, 2010) The summary is based largely on RFC REDUCE MISSPELLED EMAILS By Verifying Mail Domain Using Mailcheck For a demo, enter a@hotmale.com or b@gmail.co in the field below: Mailcheck offers user-misspelled email address suggestions for second and top level domains. For example, when a user types in "user@hotmail.cmo", "hotmail.com" will be suggested. Similarly, if only the second level domain is misspelled, it will be corrected REGEX VISUALIZER (NEW!) Enter Javascript style regular expression and hit Display DisplayPermalink
EMAIL ADDRESS REGULAR EXPRESSION THAT 99.99% WORKS.EMAIL VALIDATION SUMMARYONLINE EMAIL EXTRACTORREDUCE MISSPELLED EMAILSREGEX VISUALIZERNEW!
Just copy and paste the email regex below for the language of your choice. Feeling hardcore (or crazy, you decide)? Read the official RFC 5322, or you can check out this Email Validation Summary.Note there is no perfect email regex, hence the 99.99%.. General Email Regex (RFC 5322 Official Standard) REGULAR EXPRESSIONS CHEAT SHEET Escape Sequences. \. Escape following character. \Q. Begin literal sequence. \E. End literal sequence. “Escaping” is a way of treating characters which have a special meaning in regular expressions literally, rather than as special characters. EMAIL VALIDATION SUMMARY The summary is based largely on RFC 2822. All email addresses are in 7-bit US ASCII. ( RFC 2822, section 2.2) Email addresses consist of a local part, the “@” symbol, and the domain. ( RFC 2822, section 3.4.1) The local part can be unquoted, quoted in its entirety, or quoted on a per-label basis. ( ONLINE EMAIL EXTRACTOR Online Email Extractor. Extract email addresses from any text with this free utility. Simply copy, paste and start extracting. Please use this tool responsibly. DO NOT use this tool for spam. Copy text from any source and paste it into here. Then click extract button. REDUCE MISSPELLED EMAILS By Verifying Mail Domain Using Mailcheck For a demo, enter a@hotmale.com or b@gmail.co in the field below: Mailcheck offers user-misspelled email address suggestions for second and top level domains. For example, when a user types in "user@hotmail.cmo", "hotmail.com" will be suggested. Similarly, if only the second level domain is misspelled, it will be corrected REGEX VISUALIZER (NEW!) Regex Visualizer (new!) Enter Javascript style regular expression and hit Display. Permalink. EMAIL ADDRESS REGULAR EXPRESSION THAT 99.99% WORKS.EMAIL VALIDATION SUMMARYONLINE EMAIL EXTRACTORREDUCE MISSPELLED EMAILSREGEX VISUALIZERNEW!
Just copy and paste the email regex below for the language of your choice. Feeling hardcore (or crazy, you decide)? Read the official RFC 5322, or you can check out this Email Validation Summary.Note there is no perfect email regex, hence the 99.99%.. General Email Regex (RFC 5322 Official Standard) REGULAR EXPRESSIONS CHEAT SHEET Escape Sequences. \. Escape following character. \Q. Begin literal sequence. \E. End literal sequence. “Escaping” is a way of treating characters which have a special meaning in regular expressions literally, rather than as special characters. EMAIL VALIDATION SUMMARY The summary is based largely on RFC 2822. All email addresses are in 7-bit US ASCII. ( RFC 2822, section 2.2) Email addresses consist of a local part, the “@” symbol, and the domain. ( RFC 2822, section 3.4.1) The local part can be unquoted, quoted in its entirety, or quoted on a per-label basis. ( ONLINE EMAIL EXTRACTOR Online Email Extractor. Extract email addresses from any text with this free utility. Simply copy, paste and start extracting. Please use this tool responsibly. DO NOT use this tool for spam. Copy text from any source and paste it into here. Then click extract button. REDUCE MISSPELLED EMAILS By Verifying Mail Domain Using Mailcheck For a demo, enter a@hotmale.com or b@gmail.co in the field below: Mailcheck offers user-misspelled email address suggestions for second and top level domains. For example, when a user types in "user@hotmail.cmo", "hotmail.com" will be suggested. Similarly, if only the second level domain is misspelled, it will be corrected REGEX VISUALIZER (NEW!) Regex Visualizer (new!) Enter Javascript style regular expression and hit Display. Permalink. EMAIL ADDRESS REGULAR EXPRESSION THAT 99.99% WORKS. Just copy and paste the email regex below for the language of your choice. Feeling hardcore (or crazy, you decide)? Read the official RFC 5322, or you can check out this Email Validation Summary.Note there is no perfect email regex, hence the 99.99%.. General Email Regex (RFC 5322 Official Standard) REGULAR EXPRESSIONS CHEAT SHEET Escape Sequences. \. Escape following character. \Q. Begin literal sequence. \E. End literal sequence. “Escaping” is a way of treating characters which have a special meaning in regular expressions literally, rather than as special characters. ONLINE EMAIL EXTRACTOR Online Email Extractor. Extract email addresses from any text with this free utility. Simply copy, paste and start extracting. Please use this tool responsibly. DO NOT use this tool for spam. Copy text from any source and paste it into here. Then click extract button. EMAIL VALIDATION SUMMARY The summary is based largely on RFC 2822. All email addresses are in 7-bit US ASCII. ( RFC 2822, section 2.2) Email addresses consist of a local part, the “@” symbol, and the domain. ( RFC 2822, section 3.4.1) The local part can be unquoted, quoted in its entirety, or quoted on a per-label basis. ( REDUCE MISSPELLED EMAILS By Verifying Mail Domain Using Mailcheck For a demo, enter a@hotmale.com or b@gmail.co in the field below: Mailcheck offers user-misspelled email address suggestions for second and top level domains. For example, when a user types in "user@hotmail.cmo", "hotmail.com" will be suggested. Similarly, if only the second level domain is misspelled, it will be corrected REGEX VISUALIZER (NEW!) Regex Visualizer (new!) Enter Javascript style regular expression and hit Display. Permalink. EMAIL ADDRESS REGULAR EXPRESSION THAT 99.99% WORKS.EMAIL VALIDATION SUMMARYONLINE EMAIL EXTRACTORREDUCE MISSPELLED EMAILSREGEX VISUALIZERNEW!
Just copy and paste the email regex below for the language of your choice. Feeling hardcore (or crazy, you decide)? Read the official RFC 5322, or you can check out this Email Validation Summary.Note there is no perfect email regex, hence the 99.99%.. General Email Regex (RFC 5322 Official Standard) REGULAR EXPRESSIONS CHEAT SHEET Anchors ^ Start of string, or start of line in multi-line pattern \A Start of string $ End of string, or end of line in multi-line pattern \Z End of string \b Word boundary \B Not word boundary \< Start of word \> End of word Character Classes \c Control character \s Whitespace \S
EMAIL VALIDATION SUMMARY Here’s a list of the principal RFC texts about email addresses and the SMTP standard: RFC 821 RFC 822 RFC 1035 RFC 1123 RFC 2821 RFC 2822 (October, 2001) RFC 3696 RFC 4291 RFC 5321 RFC 5322 RFC 5952 (August, 2010) The summary is based largely on RFC ONLINE EMAIL EXTRACTOR Extract email addresses from any text with this free utility. Simply copy, paste and start extracting. Please use this tool responsibly. DO NOT use this tool for spam. Copy text from any source and paste it into here. Then click extract button. Emails extracted: Extract REDUCE MISSPELLED EMAILS By Verifying Mail Domain Using Mailcheck For a demo, enter a@hotmale.com or b@gmail.co in the field below: Mailcheck offers user-misspelled email address suggestions for second and top level domains. For example, when a user types in "user@hotmail.cmo", "hotmail.com" will be suggested. Similarly, if only the second level domain is misspelled, it will be corrected REGEX VISUALIZER (NEW!) Enter Javascript style regular expression and hit Display DisplayPermalink
EMAIL ADDRESS REGULAR EXPRESSION THAT 99.99% WORKS.EMAIL VALIDATION SUMMARYONLINE EMAIL EXTRACTORREDUCE MISSPELLED EMAILSREGEX VISUALIZERNEW!
Just copy and paste the email regex below for the language of your choice. Feeling hardcore (or crazy, you decide)? Read the official RFC 5322, or you can check out this Email Validation Summary.Note there is no perfect email regex, hence the 99.99%.. General Email Regex (RFC 5322 Official Standard) REGULAR EXPRESSIONS CHEAT SHEET Anchors ^ Start of string, or start of line in multi-line pattern \A Start of string $ End of string, or end of line in multi-line pattern \Z End of string \b Word boundary \B Not word boundary \< Start of word \> End of word Character Classes \c Control character \s Whitespace \S
EMAIL VALIDATION SUMMARY Here’s a list of the principal RFC texts about email addresses and the SMTP standard: RFC 821 RFC 822 RFC 1035 RFC 1123 RFC 2821 RFC 2822 (October, 2001) RFC 3696 RFC 4291 RFC 5321 RFC 5322 RFC 5952 (August, 2010) The summary is based largely on RFC ONLINE EMAIL EXTRACTOR Extract email addresses from any text with this free utility. Simply copy, paste and start extracting. Please use this tool responsibly. DO NOT use this tool for spam. Copy text from any source and paste it into here. Then click extract button. Emails extracted: Extract REDUCE MISSPELLED EMAILS By Verifying Mail Domain Using Mailcheck For a demo, enter a@hotmale.com or b@gmail.co in the field below: Mailcheck offers user-misspelled email address suggestions for second and top level domains. For example, when a user types in "user@hotmail.cmo", "hotmail.com" will be suggested. Similarly, if only the second level domain is misspelled, it will be corrected REGEX VISUALIZER (NEW!) Enter Javascript style regular expression and hit Display DisplayPermalink
EMAIL ADDRESS REGULAR EXPRESSION THAT 99.99% WORKS. Just copy and paste the email regex below for the language of your choice. Feeling hardcore (or crazy, you decide)? Read the official RFC 5322, or you can check out this Email Validation Summary.Note there is no perfect email regex, hence the 99.99%.. General Email Regex (RFC 5322 Official Standard) REGULAR EXPRESSIONS CHEAT SHEET Anchors ^ Start of string, or start of line in multi-line pattern \A Start of string $ End of string, or end of line in multi-line pattern \Z End of string \b Word boundary \B Not word boundary \< Start of word \> End of word Character Classes \c Control character \s Whitespace \S
EMAIL VALIDATION SUMMARY Here’s a list of the principal RFC texts about email addresses and the SMTP standard: RFC 821 RFC 822 RFC 1035 RFC 1123 RFC 2821 RFC 2822 (October, 2001) RFC 3696 RFC 4291 RFC 5321 RFC 5322 RFC 5952 (August, 2010) The summary is based largely on RFC 2822. All email ONLINE EMAIL EXTRACTOR Extract email addresses from any text with this free utility. Simply copy, paste and start extracting. Please use this tool responsibly. DO NOT use this tool for spam. Copy text from any source and paste it into here. Then click extract button. Emails extracted: Extract REDUCE MISSPELLED EMAILS By Verifying Mail Domain Using Mailcheck For a demo, enter a@hotmale.com or b@gmail.co in the field below: Mailcheck offers user-misspelled email address suggestions for second and top level domains. For example, when a user types in "user@hotmail.cmo", "hotmail.com" will be suggested. Similarly, if only the second level domain is misspelled, it will be corrected REGEX VISUALIZER (NEW!) Enter Javascript style regular expression and hit Display DisplayPermalink
EMAIL ADDRESS REGULAR EXPRESSION THAT 99.99% WORKS.EMAIL VALIDATION SUMMARYONLINE EMAIL EXTRACTORREDUCE MISSPELLED EMAILSREGEX VISUALIZERNEW!
Just copy and paste the email regex below for the language of your choice. Feeling hardcore (or crazy, you decide)? Read the official RFC 5322, or you can check out this Email Validation Summary.Note there is no perfect email regex, hence the 99.99%.. General Email Regex (RFC 5322 Official Standard) REGULAR EXPRESSIONS CHEAT SHEET Anchors ^ Start of string, or start of line in multi-line pattern \A Start of string $ End of string, or end of line in multi-line pattern \Z End of string \b Word boundary \B Not word boundary \< Start of word \> End of word Character Classes \c Control character \s Whitespace \S
EMAIL VALIDATION SUMMARY Here’s a list of the principal RFC texts about email addresses and the SMTP standard: RFC 821 RFC 822 RFC 1035 RFC 1123 RFC 2821 RFC 2822 (October, 2001) RFC 3696 RFC 4291 RFC 5321 RFC 5322 RFC 5952 (August, 2010) The summary is based largely on RFC ONLINE EMAIL EXTRACTOR Extract email addresses from any text with this free utility. Simply copy, paste and start extracting. Please use this tool responsibly. DO NOT use this tool for spam. Copy text from any source and paste it into here. Then click extract button. Emails extracted: Extract REDUCE MISSPELLED EMAILS By Verifying Mail Domain Using Mailcheck For a demo, enter a@hotmale.com or b@gmail.co in the field below: Mailcheck offers user-misspelled email address suggestions for second and top level domains. For example, when a user types in "user@hotmail.cmo", "hotmail.com" will be suggested. Similarly, if only the second level domain is misspelled, it will be corrected REGEX VISUALIZER (NEW!) Enter Javascript style regular expression and hit Display DisplayPermalink
EMAIL ADDRESS REGULAR EXPRESSION THAT 99.99% WORKS.EMAIL VALIDATION SUMMARYONLINE EMAIL EXTRACTORREDUCE MISSPELLED EMAILSREGEX VISUALIZERNEW!
Just copy and paste the email regex below for the language of your choice. Feeling hardcore (or crazy, you decide)? Read the official RFC 5322, or you can check out this Email Validation Summary.Note there is no perfect email regex, hence the 99.99%.. General Email Regex (RFC 5322 Official Standard) REGULAR EXPRESSIONS CHEAT SHEET Anchors ^ Start of string, or start of line in multi-line pattern \A Start of string $ End of string, or end of line in multi-line pattern \Z End of string \b Word boundary \B Not word boundary \< Start of word \> End of word Character Classes \c Control character \s Whitespace \S
EMAIL VALIDATION SUMMARY Here’s a list of the principal RFC texts about email addresses and the SMTP standard: RFC 821 RFC 822 RFC 1035 RFC 1123 RFC 2821 RFC 2822 (October, 2001) RFC 3696 RFC 4291 RFC 5321 RFC 5322 RFC 5952 (August, 2010) The summary is based largely on RFC ONLINE EMAIL EXTRACTOR Extract email addresses from any text with this free utility. Simply copy, paste and start extracting. Please use this tool responsibly. DO NOT use this tool for spam. Copy text from any source and paste it into here. Then click extract button. Emails extracted: Extract REDUCE MISSPELLED EMAILS By Verifying Mail Domain Using Mailcheck For a demo, enter a@hotmale.com or b@gmail.co in the field below: Mailcheck offers user-misspelled email address suggestions for second and top level domains. For example, when a user types in "user@hotmail.cmo", "hotmail.com" will be suggested. Similarly, if only the second level domain is misspelled, it will be corrected REGEX VISUALIZER (NEW!) Enter Javascript style regular expression and hit Display DisplayPermalink
EMAIL ADDRESS REGULAR EXPRESSION THAT 99.99% WORKS. Just copy and paste the email regex below for the language of your choice. Feeling hardcore (or crazy, you decide)? Read the official RFC 5322, or you can check out this Email Validation Summary.Note there is no perfect email regex, hence the 99.99%.. General Email Regex (RFC 5322 Official Standard) REGULAR EXPRESSIONS CHEAT SHEET Anchors ^ Start of string, or start of line in multi-line pattern \A Start of string $ End of string, or end of line in multi-line pattern \Z End of string \b Word boundary \B Not word boundary \< Start of word \> End of word Character Classes \c Control character \s Whitespace \S
EMAIL VALIDATION SUMMARY Here’s a list of the principal RFC texts about email addresses and the SMTP standard: RFC 821 RFC 822 RFC 1035 RFC 1123 RFC 2821 RFC 2822 (October, 2001) RFC 3696 RFC 4291 RFC 5321 RFC 5322 RFC 5952 (August, 2010) The summary is based largely on RFC 2822. All email ONLINE EMAIL EXTRACTOR Extract email addresses from any text with this free utility. Simply copy, paste and start extracting. Please use this tool responsibly. DO NOT use this tool for spam. Copy text from any source and paste it into here. Then click extract button. Emails extracted: Extract REDUCE MISSPELLED EMAILS By Verifying Mail Domain Using Mailcheck For a demo, enter a@hotmale.com or b@gmail.co in the field below: Mailcheck offers user-misspelled email address suggestions for second and top level domains. For example, when a user types in "user@hotmail.cmo", "hotmail.com" will be suggested. Similarly, if only the second level domain is misspelled, it will be corrected REGEX VISUALIZER (NEW!) Enter Javascript style regular expression and hit Display DisplayPermalink
ALMOST PERFECT EMAIL REGEX EVERYTHING ABOUT EMAIL REGULAR EXPRESSION!Skip to content
* Email Address Regular Expression That 99.99% Works. Disagree?Join discussion!
* Email Validation Summary * Online Email Extractor * Reduce Misspelled Emails * Regex Visualizer _(new!)_ * Regular Expressions Cheat Sheet EMAIL ADDRESS REGULAR EXPRESSION THAT 99.99% WORKS. DISAGREE? JOINDISCUSSION!
Facebook Twitter Share0 Just copy and paste the email regex below for the language of your choice. Feeling hardcore (or crazy, you decide)? Read the official RFC 5322 , or you can check out this Email Validation Summary. Note there is no
perfect email regex ,hence the 99.99%.
GENERAL EMAIL REGEX (RFC 5322 OFFICIAL STANDARD) (?:+(?:\.+)*|"(?:|\\)*")@(?:(?:(?:*)?\.)+(?:*)?|\)1
(?:+(?:\.+)*|"(?:|\\)*")@(?:(?:(?:*)?\.)+(?:*)?|\) RAILROAD DIAGRAM OF ABOVE REGEX (CLICK TO ENLARGE) Made with Our Free Regex Visualizer FREE EMAIL ADDRESS VALIDATOR (WITH DNS LOOKUP):Validate
Try our FREE EMAIL FORM-BUILDER (with FREE email validation) TEST YOUR JAVASCRIPT REGULAR EXPRESSION Start by entering a regular expression and then a test string. Please refer to the Regex Cheat Sheet on the left hand side.REGULAR EXPRESSION:
/ /
TEST STRINGS:
No Matches
MATCH RESULTS:
PYTHON
r"(^+@+\.+$)"
1
r"(^+@+\.+$)"
JAVASCRIPT
/^((+(\.+)*)|(".+"))@((\)|((+\.)+{2,}))$/1
/^((+(\.+)*)|(".+"))@((\)|((+\.)+{2,}))$/HTML5
1
In case you ever wonder, below is the regex used in type=”email”from W3C
:
/^+@+(?:\.+)*$/
1
/^+@+(?:\.+)*$/
SWIFT (REGEX ONLY)
+@+\\.{2,64}
1
+@+\\.{2,64}
SWIFT (REGEX USED IN A FUNCTION) func validateEmail(candidate: String) -> Bool { let emailRegex = "+@+\\.{2,64}" return NSPredicate(format: "SELF MATCHES %@", emailRegex).evaluateWithObject(candidate) }1
2
3
4
func validateEmail(candidate: String) -> Bool { let emailRegex = "+@+\\.{2,64}" return NSPredicate(format: "SELF MATCHES %@", emailRegex).evaluateWithObject(candidate)}
PHP
/^(?!(?:(?:\x22?\x5C\x22?)|(?:\x22?\x22?)){255,})(?!(?:(?:\x22?\x5C\x22?)|(?:\x22?\x22?)){65,}@)(?:(?:+)|(?:\x22(?:|(?:\x5C))*\x22))(?:\.(?:(?:+)|(?:\x22(?:|(?:\x5C))*\x22)))*@(?:(?:(?!.*{64,})(?:(?:(?:xn--)?+(?:-+)*\.){1,126}){1,}(?:(?:*)|(?:(?:xn--)+))(?:-+)*)|(?:\){7,})(?:{1,4}(?::{1,4}){0,5})?::(?:{1,4}(?::{1,4}){0,5})?)))|(?:(?:IPv6:(?:(?:{1,4}(?::{1,4}){5}:)|(?:(?!(?:.*:){5,})(?:{1,4}(?::{1,4}){0,3})?::(?:{1,4}(?::{1,4}){0,3}:)?)))?(?:(?:25)|(?:2)|(?:1{2})|(?:?))(?:\.(?:(?:25)|(?:2)|(?:1{2})|(?:?))){3}))\]))$/iD1
/^(?!(?:(?:\x22?\x5C\x22?)|(?:\x22?\x22?)){255,})(?!(?:(?:\x22?\x5C\x22?)|(?:\x22?\x22?)){65,}@)(?:(?:+)|(?:\x22(?:|(?:\x5C))*\x22))(?:\.(?:(?:+)|(?:\x22(?:|(?:\x5C))*\x22)))*@(?:(?:(?!.*{64,})(?:(?:(?:xn--)?+(?:-+)*\.){1,126}){1,}(?:(?:*)|(?:(?:xn--)+))(?:-+)*)|(?:\){7,})(?:{1,4}(?::{1,4}){0,5})?::(?:{1,4}(?::{1,4}){0,5})?)))|(?:(?:IPv6:(?:(?:{1,4}(?::{1,4}){5}:)|(?:(?!(?:.*:){5,})(?:{1,4}(?::{1,4}){0,3})?::(?:{1,4}(?::{1,4}){0,3}:)?)))?(?:(?:25)|(?:2)|(?:1{2})|(?:?))(?:\.(?:(?:25)|(?:2)|(?:1{2})|(?:?))){3}))\]))$/iDPERL / RUBY
(?:(?:\r\n)?)*(?:(?:(?:+(?:(?:(?:\r\n)? )+|\Z|(?=[\))|"(?:|\\.|(?:(?:\r\n)?))*"(?:(?: \r\n)?)*)(?:\.(?:(?:\r\n)?)*(?:+(?:(?:( ?:\r\n)?)+|\Z|(?=[\))|"(?:|\\.|(?:(?:\r\n)?))*"(?:(?:\r\n)?)*))*@(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*)(?:\.(?:(?:\r\n)?)*(?:+ (?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?: (?:\r\n)?)*))*|(?:+(?:(?:(?:\r\n)?)+|\Z |(?=[\))|"(?:|\\.|(?:(?:\r\n)?))*"(?:(?:\r\n) ?)*)*\<(?:(?:\r\n)?)*(?:@(?:+(?:(?:(?:\ r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*)(?:\.(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n) ?)+|\Z|(?=[\))|\(?:(?:\r\n)? )*))*(?:,@(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)* )(?:\.(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)? )+|\Z|(?=[\))|\(?:(?:\r\n)?)*))*) *:(?:(?:\r\n)?)*)?(?:+(?:(?:(?:\r\n)?)+ |\Z|(?=[\))|"(?:|\\.|(?:(?:\r\n)?))*"(?:(?:\r \n)?)*)(?:\.(?:(?:\r\n)?)*(?:+(?:(?:(?: \r\n)?)+|\Z|(?=[\))|"(?:|\\.|(?:(?:\r\n)?))*"(?:(?:\r\n)?)*))*@(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\( ?:(?:\r\n)?)*)(?:\.(?:(?:\r\n)?)*(?:+(? :(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(? :\r\n)?)*))*\>(?:(?:\r\n)?)*)|(?:+(?:(? :(?:\r\n)?)+|\Z|(?=[\))|"(?:|\\.|(?:(?:\r\n)? ))*"(?:(?:\r\n)?)*)*:(?:(?:\r\n)?)*(?:(?:(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|"(?:| \\.|(?:(?:\r\n)?))*"(?:(?:\r\n)?)*)(?:\.(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|" (?:|\\.|(?:(?:\r\n)?))*"(?:(?:\r\n)?)*))*@(?:(?:\r\n)? )*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*)(?:\.(?:(?:\r\n)?)*(? :+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*))*|(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|"(?:|\\.|( ?:(?:\r\n)?))*"(?:(?:\r\n)?)*)*\<(?:(?:\r\n)?)*(?:@(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*)(?:\.(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*))*(?:,@(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*)(?:\.(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*))*)*:(?:(?:\r\n)?)*)?(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|"(?:|\\ .|(?:(?:\r\n)?))*"(?:(?:\r\n)?)*)(?:\.(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|"(? :|\\.|(?:(?:\r\n)?))*"(?:(?:\r\n)?)*))*@(?:(?:\r\n)?)* (?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*)(?:\.(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*))*\>(?:(?:\r\n)?)*)(?:,\s*( ?:(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|"(?:|\\.|(?:(?:\r\n)?))*"(?:(?:\r\n)?)*)(?:\.(?:( ?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[ \))|"(?:|\\.|(?:(?:\r\n)?))*"(?:(?:\r\n)?)*))*@(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*)(? :\.(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+| \Z|(?=[\))|\(?:(?:\r\n)?)*))*|(?: +(?:(?:(?:\r\n)?)+|\Z|(?=[\))|"(?:|\\.|(?:(?:\r\n)?))*"(?:(?:\r\n)?)*)*\<(?:(?:\r\n) ?)*(?:@(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*)(?:\.(?:(?:\r\n) ?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*))*(?:,@(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*)(?:\.(?:(?:\r\n)? )*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*))*)*:(?:(?:\r\n)?)*)? (?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|"(?:|\\.|(?:(?:\r\n)?))*"(?:(?:\r\n)?)*)(?:\.(?:(?: \r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|"(?:|\\.|(?:(?:\r\n)?))*"(?:(?:\r\n)?) *))*@(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?) +|\Z|(?=[\))|\(?:(?:\r\n)?)*)(?:\ .(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z |(?=[\))|\(?:(?:\r\n)?)*))*\>(?:( ?:\r\n)?)*))*)?;\s*)1
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(?:(?:\r\n)?)*(?:(?:(?:+(?:(?:(?:\r\n)? )+|\Z|(?=[\))|"(?:|\\.|(?:(?:\r\n)?))*"(?:(?: \r\n)?)*)(?:\.(?:(?:\r\n)?)*(?:+(?:(?:( ?:\r\n)?)+|\Z|(?=[\))|"(?:|\\.|(?:(?:\r\n)?))*"(?:(?:\r\n)?)*))*@(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*)(?:\.(?:(?:\r\n)?)*(?:+ (?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?: (?:\r\n)?)*))*|(?:+(?:(?:(?:\r\n)?)+|\Z |(?=[\))|"(?:|\\.|(?:(?:\r\n)?))*"(?:(?:\r\n) ?)*)*\<(?:(?:\r\n)?)*(?:@(?:+(?:(?:(?:\ r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*)(?:\.(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n) ?)+|\Z|(?=[\))|\(?:(?:\r\n)? )*))*(?:,@(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)* )(?:\.(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)? )+|\Z|(?=[\))|\(?:(?:\r\n)?)*))*) *:(?:(?:\r\n)?)*)?(?:+(?:(?:(?:\r\n)?)+ |\Z|(?=[\))|"(?:|\\.|(?:(?:\r\n)?))*"(?:(?:\r \n)?)*)(?:\.(?:(?:\r\n)?)*(?:+(?:(?:(?: \r\n)?)+|\Z|(?=[\))|"(?:|\\.|(?:(?:\r\n)?))*"(?:(?:\r\n)?)*))*@(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\( ?:(?:\r\n)?)*)(?:\.(?:(?:\r\n)?)*(?:+(? :(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(? :\r\n)?)*))*\>(?:(?:\r\n)?)*)|(?:+(?:(? :(?:\r\n)?)+|\Z|(?=[\))|"(?:|\\.|(?:(?:\r\n)? ))*"(?:(?:\r\n)?)*)*:(?:(?:\r\n)?)*(?:(?:(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|"(?:| \\.|(?:(?:\r\n)?))*"(?:(?:\r\n)?)*)(?:\.(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|" (?:|\\.|(?:(?:\r\n)?))*"(?:(?:\r\n)?)*))*@(?:(?:\r\n)? )*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*)(?:\.(?:(?:\r\n)?)*(? :+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*))*|(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|"(?:|\\.|( ?:(?:\r\n)?))*"(?:(?:\r\n)?)*)*\<(?:(?:\r\n)?)*(?:@(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*)(?:\.(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*))*(?:,@(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*)(?:\.(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*))*)*:(?:(?:\r\n)?)*)?(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|"(?:|\\ .|(?:(?:\r\n)?))*"(?:(?:\r\n)?)*)(?:\.(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|"(? :|\\.|(?:(?:\r\n)?))*"(?:(?:\r\n)?)*))*@(?:(?:\r\n)?)* (?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*)(?:\.(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*))*\>(?:(?:\r\n)?)*)(?:,\s*( ?:(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|"(?:|\\.|(?:(?:\r\n)?))*"(?:(?:\r\n)?)*)(?:\.(?:( ?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[ \))|"(?:|\\.|(?:(?:\r\n)?))*"(?:(?:\r\n)?)*))*@(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*)(? :\.(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+| \Z|(?=[\))|\(?:(?:\r\n)?)*))*|(?: +(?:(?:(?:\r\n)?)+|\Z|(?=[\))|"(?:|\\.|(?:(?:\r\n)?))*"(?:(?:\r\n)?)*)*\<(?:(?:\r\n) ?)*(?:@(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*)(?:\.(?:(?:\r\n) ?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*))*(?:,@(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*)(?:\.(?:(?:\r\n)? )*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|\(?:(?:\r\n)?)*))*)*:(?:(?:\r\n)?)*)? (?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|"(?:|\\.|(?:(?:\r\n)?))*"(?:(?:\r\n)?)*)(?:\.(?:(?: \r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z|(?=[\))|"(?:|\\.|(?:(?:\r\n)?))*"(?:(?:\r\n)?) *))*@(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?) +|\Z|(?=[\))|\(?:(?:\r\n)?)*)(?:\ .(?:(?:\r\n)?)*(?:+(?:(?:(?:\r\n)?)+|\Z |(?=[\))|\(?:(?:\r\n)?)*))*\>(?:( ?:\r\n)?)*))*)?;\s*)PERL 5.10 OR NEWER
/(?(DEFINE)(?(?&mailbox) | (?&group)) (? (?&name_addr) | (?&addr_spec)) (? (?&display_name)? (?&angle_addr)) (? (?&CFWS)? < (?&addr_spec) > (?&CFWS)?) (? (?&display_name) : (?:(?&mailbox_list) | (?&CFWS))? ; (?&CFWS)?) (? (?&phrase)) (? (?&mailbox) (?: , (?&mailbox))*) (? (?&local_part) \@ (?&domain)) (? (?&dot_atom) | (?"ed_string)) (? (?&dot_atom) | (?&domain_literal)) (? (?&CFWS)? \ (?&CFWS)?) (? (?&dtext) | (?"ed_pair)) (? (?&NO_WS_CTL) | ) (? (?&ALPHA) | (?&DIGIT) | ) (? (?&CFWS)? (?&atext)+ (?&CFWS)?) (? (?&CFWS)? (?&dot_atom_text) (?&CFWS)?) (? (?&atext)+ (?: \. (?&atext)+)*) (? ) (? \\ (?&text)) (? (?&NO_WS_CTL) | ) (? (?&qtext) | (?"ed_pair)) (? (?&CFWS)? (?&DQUOTE) (?:(?&FWS)? (?&qcontent))* (?&FWS)? (?&DQUOTE) (?&CFWS)?) (? (?&atom) | (?"ed_string)) (? (?&word)+) # Folding white space (? (?: (?&WSP)* (?&CRLF))? (?&WSP)+) (? (?&NO_WS_CTL) | ) (? (?&ctext) | (?"ed_pair) | (?&comment)) (? \( (?: (?&FWS)? (?&ccontent))* (?&FWS)? \) ) (? (?: (?&FWS)? (?&comment))* (?: (?:(?&FWS)? (?&comment)) | (?&FWS))) # No whitespace control (? ) (? ) (? ) (? \x0d \x0a) (? ") (? ) ) (?&address)/x1
/(?(DEFINE)(?(?&mailbox) | (?&group)) (? (?&name_addr) | (?&addr_spec)) (? (?&display_name)? (?&angle_addr)) (? (?&CFWS)? < (?&addr_spec) > (?&CFWS)?) (? (?&display_name) : (?:(?&mailbox_list) | (?&CFWS))? ; (?&CFWS)?) (? (?&phrase)) (? (?&mailbox) (?: , (?&mailbox))*) (? (?&local_part) \@ (?&domain)) (? (?&dot_atom) | (?"ed_string)) (? (?&dot_atom) | (?&domain_literal)) (? (?&CFWS)? \ (?&CFWS)?) (? (?&dtext) | (?"ed_pair)) (? (?&NO_WS_CTL) | ) (? (?&ALPHA) | (?&DIGIT) | ) (? (?&CFWS)? (?&atext)+ (?&CFWS)?) (? (?&CFWS)? (?&dot_atom_text) (?&CFWS)?) (? (?&atext)+ (?: \. (?&atext)+)*) (? ) (? \\ (?&text)) (? (?&NO_WS_CTL) | ) (? (?&qtext) | (?"ed_pair)) (? (?&CFWS)? (?&DQUOTE) (?:(?&FWS)? (?&qcontent))* (?&FWS)? (?&DQUOTE) (?&CFWS)?) (? (?&atom) | (?"ed_string)) (? (?&word)+) # Folding white space (? (?: (?&WSP)* (?&CRLF))? (?&WSP)+) (? (?&NO_WS_CTL) | ) (? (?&ctext) | (?"ed_pair) | (?&comment)) (? \( (?: (?&FWS)? (?&ccontent))* (?&FWS)? \) ) (? (?: (?&FWS)? (?&comment))* (?: (?:(?&FWS)? (?&comment)) | (?&FWS))) # No whitespace control (? ) (? ) (? ) (? \x0d \x0a) (? ") (? ) ) (?&address)/xJAVA
(?:+(?:\.+)*|"(?:|\\)*")@(?:(?:(?:*)?\.)+(?:*)?|\)1
(?:+(?:\.+)*|"(?:|\\)*")@(?:(?:(?:*)?\.)+(?:*)?|\) RUBY (SIMPLE VERSION) /\A(.?)+@+(\.+)*\.+\z/i1
/\A(.?)+@+(\.+)*\.+\z/i .NET (GENERAL PATTERN MATCH) ^\w+(\w+)*@\w+(\w+)*\.\w+(\w+)*$1
^\w+(\w+)*@\w+(\w+)*\.\w+(\w+)*$C#
^(?(")(".+?(?1^(?(")(".+?(?VB.NETFunction isEmail(ByVal email as string) as boolean Static emailRegexAs New
Regex("^+(.+)@+(.+)*(.{2,4})$") return emailRegex.IsMatch(email) End Function1
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Function isEmail(ByVal email as string) as boolean Static emailRegex As New Regex("^+(.+)@+(.+)*(.{2,4})$") return emailRegex.IsMatch(email)End Function
FIND ALL EMAIL ADDRESSES IN A FILE USING GREP $ grep -E -o "\b+@+\.{2,6}\b"filename.txt
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$ grep -E -o "\b+@+\.{2,6}\b"filename.txt
SQL SERVER EMAIL VALIDATION select email from table_name where patindex ('%%', email) > 0 -- Invalid characters or patindex ('%', email) > 0 -- Valid but cannot be starting character or patindex ('%', email) > 0 -- Valid but cannot be ending character or email not like '%@%.%' -- Must contain at least one @ and one . or email like '%..%' -- Cannot have two periods in a row or email like '%@%@%' -- Cannot have two @ anywhere or email like '%.@%' or email like '%@.%' -- Cannot have @ and . next to each other or email like '%.cm' or email like '%.co' -- Camaroon or Colombia? Typos. or email like '%.or' or email like '%.ne' -- Missing last letter1
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select email
from table_name where patindex ('%%', email) > 0 -- Invalid characters or patindex ('%', email) > 0 -- Valid but cannot be startingcharacter
or patindex ('%', email) > 0 -- Valid but cannot be endingcharacter
or email not like '%@%.%' -- Must contain at least one @ and one . or email like '%..%' -- Cannot have two periods in a row or email like '%@%@%' -- Cannot have two @ anywhere or email like '%.@%' or email like '%@.%' -- Cannot have @ and . nextto each other
or email like '%.cm' or email like '%.co' -- Camaroon or Colombia?Typos.
or email like '%.or' or email like '%.ne' -- Missing last letter ORACLE PL/SQL EMAIL REGEX SELECT email FROM table_name WHERE REGEXP_LIKE (email,'+@+\.{2,4}');
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SELECT email
FROM table_name
WHERE REGEXP_LIKE (email, '+@+\.{2,4}');MYSQL
SELECT * FROM `users` WHERE `email` NOT REGEXP'^+@+\.{2,4}$';
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SELECT * FROM `users` WHERE `email` NOT REGEXP'^+@+\.{2,4}$';
------------------------- BONUS: WHAT DOES THE FOLLOWING REGEX DO?1
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MORE PERFECT REGEXES* Perfect URL Regex
* IP Address Regex
* Phone Number RegexPOPULAR TOOLS
* _Regex Visualizer (new!)_ * Online Email Extractor* Cheat Sheet
* Reduce Misspelled Emails * Email Validation Summary*
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