Send mail using send grid in c#

helper.cs

using System;
using SendGrid;
using SendGrid.Helpers.Mail;  // Install Send Grid using nuget package manager

namespace ECommerce_Shop.Helpers
{
    // Call this common function where you want to send a mail
    public static class SendEmail
    {
        //Send Mail based on subject, HTML body content and TO(Email) passed | Godaddy
        public static bool Send(string subject, string body, string to)
        {
            bool response;
            try
            { 
                var client = new SendGridClient("YOUR KEY");
                var from = new EmailAddress("FROM MAIL", "FROM NAME");
                var toAddress = new EmailAddress("TO EMAIL", "TO NAME");
                var plainTextContent = string.Empty;
                var htmlContent = body; //BODY content or email template
                var msg = MailHelper.CreateSingleEmail(from, toAddress, subject, plainTextContent, htmlContent);
                var sendEmailAsync = client.SendEmailAsync(msg);
                response = true;
            }
            catch (Exception e)
            {
                response = false;
            }
            return response;
        }

    }
}

Test.cs

using YourProject.Helpers;

namespace YourProject.Controllers
{
    public class HomeController : Controller
    {
    
       public void SendTestMail1620()
        {
            SendEmail.Send("EMAIL SUBJECT", "EMAIL TEMPLATE or CONTENT", "TO EMAIL");
        }
        
    }
}