var smtpServerHost = CloudConfigurationManager.GetSetting("SmtpServerHost");
var smtpServerPort = int.Parse(CloudConfigurationManager.GetSetting("SmtpServerPort"));
var smtpServerUserName = CloudConfigurationManager.GetSetting("SmtpServerUserName");
var smtpServerPassword = CloudConfigurationManager.GetSetting("SmtpServerPassword");

var client = new SmtpClient(smtpServerHost, smtpServerPort);
client.Credentials = new NetworkCredential(smtpServerUserName, smtpServerPassword);