Can anyone explain this regex used to get the email address? It is given in the ‘Matches’ activity.
((?>[a-zA-Z\d!#$%&'*+\-\/=?^_
{|}~]+\x20*|"((?=[\x01-\x7f])[^"\]|\[\x01-\x7f])"\x20)(?<))?((?!.)(?>.?[a-zA-Z\d!#$%&’+-/=?^_{|}~]+)+|"((?=[\x01-\x7f])[^"\\]|\\[\x01-\x7f])*")@(((?!-)[a-zA-Z\d\-]+(?<!-)\.)+[a-zA-Z]{2,}|\[(((?(?<!\[)\.)(25[0-5]|2[0-4]\d|[01]?\d?\d)){4}|[a-zA-Z\d\-]*[a-zA-Z\d]:((?=[\x01-\x7f])[^\\\[\]]|\\[\x01-\x7f])+)\])(?(angle)>)