public async Task SendEmail(string emailAddress, string subject, string body)
{
SendGrid.SendGridMessage message = new SendGrid.SendGridMessage();
message.From = new System.Net.Mail.MailAddress("*****@*****.**");
message.To = new System.Net.Mail.MailAddress[]
{
new System.Net.Mail.MailAddress(emailAddress)
};
message.Subject = subject;
message.Html = body;
message.DisableClickTracking();
message.DisableOpenTracking();
string userName = System.Web.Configuration.WebConfigurationManager.AppSettings["SendGridUserName"];
string password = System.Web.Configuration.WebConfigurationManager.AppSettings["SendGridPassword"];
var credentials = new NetworkCredential(userName, password);
await new SendGrid.Web(credentials).DeliverAsync(message);
}