#include <StringConstants.au3> ; to declare the Constants of StringRegExp
#include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate
Local $sRegex = "(([^<>()\[\]\.,;:\s@\"]+(\.[^<>()\[\]\.,;:\s@\"]+)*)|(\".+\"))@(([^<>()\.,;\s@\"]+\.{0,1})+([^<>()\.,;:\s@\"]{2,}|[\d\.]+))"
Local $sString = "- VALID MAILS" & @CRLF & _
"" & @CRLF & _
"Abc@example.com" & @CRLF & _
"Abc@example.com." & @CRLF & _
"Abc@10.42.0.1" & @CRLF & _
"user@localserver" & @CRLF & _
"Abc.123@example.com" & @CRLF & _
"user+mailbox/department=shipping@example.com" & @CRLF & _
""very.(),:;<>[]\".VERY.\"very@\\ \"very\".unusual"@strange.example.com" & @CRLF & _
"!#$%&'*+-/=?^_`.{|}~@example.com" & @CRLF & _
""()<>[]:,;@\\\"!#$%&'-/=?^_`{}| ~.a"@example.org" & @CRLF & _
""Abc@def"@example.com" & @CRLF & _
""Fred Bloggs"@example.com" & @CRLF & _
""Joe.\\Blow"@example.com" & @CRLF & _
"Loïc.Accentué@voilà.fr" & @CRLF & _
"" "@example.org" & @CRLF & _
"user@[IPv6:2001:DB8::1]" & @CRLF & _
"" & @CRLF & _
"- INVALID MAILS" & @CRLF & _
"" & @CRLF & _
"Abc.example.com" & @CRLF & _
"A@b@c@example.com" & @CRLF & _
"a"b(c)d,e:f;g<h>i[j\k]l@example.com" & @CRLF & _
"just"not"right@example.com" & @CRLF & _
"this is"not\allowed@example.com" & @CRLF & _
"this\ still\"not\\allowed@example.com" & @CRLF & _
"john..doe@example.com" & @CRLF & _
"john.doe@example..com"
Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYGLOBALFULLMATCH)
Local $aFullArray[0]
For $i = 0 To UBound($aArray) -1
_ArrayConcatenate($aFullArray, $aArray[$i])
Next
$aArray = $aFullArray
; Present the entire match result
_ArrayDisplay($aArray, "Result")
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm