Regular Expression for Validate E-mail Address format.?

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Regular Expression for Validate E-mail Address format.?
Format: <Local-Part>@<Domain>

Maximum length up to 254 characters.
[64 for Local-part]

Valid characters in Local-Part:
[a–z, A–Z, 0-9]
! # $ % & ' * + - / = ? ^ _ ` { | } ~
International characters above U+007F are also permitted.
Characters with following restrictions:
Space and "(),:;<>@[] \

Restrictions:
· None of the above characters in the local part is allowed
outside quotation marks.

· Quotes (“) and backslashes (\) may only exist when within
quoted strings and preceded by a backslash.
Valid Ex: "VERY\\\".unusual\\"@strange.example.com
Invalid Ex: “very\unusual”@example.com

· Quoted strings must be followed by dot character or the quote
string should be the only element in the local-part.
Valid Ex: “abc”@gmail.com, “abc”.xy@example.com
Invalid Ex: just"not"right@example.com

Posted 3-Mar-14 22:23pm

Ganeshaspy

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k07 · Answer 1 · 2014-03-03T22:27:00

Solution 1

[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?

Posted 3-Mar-14 22:27pm

k07

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Ganeshaspy 4-Mar-14 4:38am

Its working fine but I want validate above type of example.