SendEmail

 public void SendEmail(string email, string body, string subject, string sender)
    {
        if (email.Trim() != "" && email.Trim() != " ")
        {
            if (isEmail(email))
            {
                try
                {
                    System.Net.Mail.MailMessage message = new System.Net.Mail.MailMessage();
                    if (sender != "")
                    {
                        message.From = new MailAddress(sender);
                    }
                    else
                    {
                        message.From = new MailAddress("serviceteam@julyservices.com");
                    }

                    var emails = email.Split(new Char[] { ',', ';' });
                    foreach (var to in emails)
                    {
                        if (!String.IsNullOrEmpty(to))
                            message.To.Add(new MailAddress(to));
                    }

                    message.To.Add(new MailAddress(email));
                    message.Subject = subject;
                    message.Body = body;
                    message.Priority = System.Net.Mail.MailPriority.High;
                    message.IsBodyHtml = true;

                    //SmtpClient smtpClient = new SmtpClient("mail.texaspension.com");
                    //smtpClient.UseDefaultCredentials = true;

                    System.Net.Mail.SmtpClient smtpClient = new SmtpClient();
                    smtpClient.Host = "mail.julyservices.com";
                    System.Net.NetworkCredential SMTPUserInfo = new System.Net.NetworkCredential("dp_smtp", "Dp$123456", "julyservices");
                    smtpClient.Credentials = SMTPUserInfo;
                    smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;

                    smtpClient.Send(message);
                }
                catch (Exception ex)
                {
                    throw ex;
                }
            }
        }
    }