using System;

public class Program

{

    public static void Main()

    {

        var from = new SendGrid.Helpers.Mail.EmailAddress("noreply@exenai.com", "xxx");

​

        var to = new SendGrid.Helpers.Mail.EmailAddress("xxx", "xxx");

​

​

        var sendGridOptions = new SendGrid.SendGridClientOptions

        {

            ApiKey = "sssss"

        };

​

        sendGridOptions.SetDataResidency("eu");

​

        var client = new SendGrid.SendGridClient(sendGridOptions);

        Console.WriteLine(sendGridOptions.Host);

    }

}