Send-Email-CSharp/ConsoleApp1/Program.cs

using System.Text.Json;

namespace ConsoleApp1
{
    class Program
    {
        static async Task Main()
        {
            string jsonFilePath = "appsettings.json";
            string jsonString = File.ReadAllText(jsonFilePath);

            var options = new JsonSerializerOptions
            {
                PropertyNameCaseInsensitive = true
            };

            SmtpSettings? smtpSettings = JsonSerializer.Deserialize<SmtpSettings>(jsonString, options);

            if (smtpSettings is null)
            {
                Console.WriteLine("Failed to deserialize SmtpSettings");
                return;
            }
            
            MailService mailService = new MailService(smtpSettings);
            await mailService.SendEmailText("user@user.com", "Hello World", "Hello World from C#!");
            
            Dictionary<string, string> replacements = new Dictionary<string, string>
            {
                { "name", "Jonas" }
            };
            
            await mailService.SendEmailHtmlFile("user@user.com" , "Hello World", "email.html", replacements);


        }
    }
}