OutlookCaseHelper/OutlookCaseHelper/Program.cs

using System;
using System.Windows.Forms;

namespace OutlookCaseHelper
{
    internal static class Program
    {
        [STAThread]
        static void Main(string[] args)
        {
            try
            {
                if (args.Length > 0 && args[0] == "/postinstall")
                {
                    string exePath = System.Diagnostics.Process.GetCurrentProcess().MainModule!.FileName;

                    var psi = new System.Diagnostics.ProcessStartInfo
                    {
                        FileName = exePath,
                        UseShellExecute = true,
                        CreateNoWindow = false
                    };

                    System.Threading.Thread.Sleep(12000); // aguarda 12 segundos
                    System.Diagnostics.Process.Start(psi);
                    return;
                }

                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
                Application.Run(new Form1());
            }
            catch { }
        }
    }
}