Send email at regular interval in .Net

In Global.asax file Write Following code

<%@ Application Language="C#" %>
<%@ Import Namespace="System.Timers" %>
<script runat="server">

    void Application_Start(object sender, EventArgs e)
    {
        // Code that runs on application startup
        System.Timers.Timer myTimer = new System.Timers.Timer();
        // Set the Interval to 5 seconds (5000 milliseconds).      
        DayOfWeek xyz = System.DateTime.Now.DayOfWeek;
        if (xyz.ToString() == "Monday")
        {
            myTimer.Interval = 604800;
            myTimer.AutoReset = true;
            myTimer.Elapsed += new ElapsedEventHandler(myTimer_Elapsed);
            myTimer.Enabled = true;
        }
    }

    public void myTimer_Elapsed(object source, System.Timers.ElapsedEventArgs e)
    {
        clsScheduleMail objScheduleMail = new clsScheduleMail();
        objScheduleMail.SendScheduleMail("sis","sunil@jupsoft.org","","CheckEmail","CheckEmail","","For Testing Purpose");
     
    }

    void Application_End(object sender, EventArgs e)
    {
        //  Code that runs on application shutdown

    }

    void Application_Error(object sender, EventArgs e)
    {
        // Code that runs when an unhandled error occurs

    }

    void Session_Start(object sender, EventArgs e)
    {
        // Code that runs when a new session is started

    }

    void Session_End(object sender, EventArgs e)
    {
        // Code that runs when a session ends.
        // Note: The Session_End event is raised only when the sessionstate mode
        // is set to InProc in the Web.config file. If session mode is set to StateServer
        // or SQLServer, the event is not raised.

    }

     
</script>