Validating Email Address inside Orchestration

 Simple Expression can validate your email address inside orchestration

boolIsmail  = System.Text.RegularExpressions.Regex.IsMatch(strmail, @"\A(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?)\Z",System.Text.RegularExpressions.RegexOptions.IgnoreCase );