E-mail extraction from an Outlook copied string

Sometimes you need to extract an e-mail address from a format like this:

Name Surname <namesurname[email protected]>

In such cases use this function:

/**
 * Extract mail address from a string
 * 
 * @param string $emailString
 * @return mixed match on success, false on error
 */
function extractEmail( $emailString ) {
    /** @var string $result **/
    $result = preg_match( '/^(?:[\w.\- ]+<)?([\w._-][email protected][\da-z\.-]+\.[a-z\.]{2,6})>?$/iu', $emailString, $matches );
                               
    if( $result === 1 || $result !== false ) {
        return $matches[1];
    } else {
        return false;
    }      
}

Link to test regular expression used by me is here.