http://www.andrewconnell.com/Creating-Custom-SharePoint-Timer-Jobs.

}
    public Test(string jobName, SPService service, SPServer server, SPJobLockType targetType): base(jobName, service, server, targetType)
    {
        this.Title = "Timer Job";
    }
    public Test(string jobName, SPWebApplication webApplication)
        : base(jobName, webApplication, null, SPJobLockType.ContentDatabase)
    {

        this.Title = "Timer Job";

    }

     private void SendEmail(string EmailBody, string Subject, string ToEmailAddress)
     {
         try
         {
             System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage();

             msg.To.Add(ToEmailAddress);
             msg.From = new System.Net.Mail.MailAddress("****");
             msg.Subject = Subject;

             msg.IsBodyHtml = true;
             //EmailBody = " <b>Welcome to Send an Email!!</b><p> Example.<BR>";
             msg.Body = EmailBody;
             string smtp = "*****";
             System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient(smtp);
             System.Net.NetworkCredential NetworkCred = new System.Net.NetworkCredential();
             NetworkCred.UserName = "**";
             NetworkCred.Password = "**";
             NetworkCred.Domain = "**";
             client.Credentials = NetworkCred;
             client.Send(msg);
         }
         catch (Exception ex)
         {

             LogError(ex.InnerException.ToString(), ex.StackTrace);
         }

     }



    public override void Execute(Guid contentDbId)
     {
         System.Diagnostics.Debug.Assert(false);
         System.Diagnostics.Debug.WriteLine(SPContext.Current.Site.WebApplication.Name);
         StringBuilder _emailBody = new StringBuilder();
         string _staffName=string.Empty;
         string _Emailtext=string.Empty;
         string _url =string.Empty;
         string _formNo = string.Empty;
         string _staffEmailAddress = string.Empty;
         try
         {
             string url = @"http://url";
             using (SPSite site = new SPSite(url))
             {
                 using (SPWeb web = site.OpenWeb())
                 {
                     SPListItemCollection coll = web.Lists["test"].Items;
                     foreach (SPListItem item in coll)
                     {

                         if (!string.IsNullOrEmpty(_formStatus))
                         {
                             if (_formStatus == "Submitted")
                             {

                _emailBody.Append("<b>Welcome to Send an Email!!</b><p> Example.<BR>");
                                 SendEmail(_emailBody.ToString(), _formStatus,_staffEmailAddress);

                             }

                         }

                     }
                 }
             }
         }
         catch (Exception ex)
         {

             LogError(ex.Source, ex.StackTrace + ex.InnerException.ToString());
         }


        //TODO: write here the code of your job!

    }

}
  public  class TimerJob : SPFeatureReceiver
{
    const string TASK_LOGGER_JOB_NAME = "Timer Job";
    public override void FeatureActivated(SPFeatureReceiverProperties properties)
    {
        //SPDiagnosticsService diag = new SPDiagnosticsService();


        try
        {
            SPSecurity.RunWithElevatedPrivileges(delegate()
            {
                SPSite site = properties.Feature.Parent as SPSite;

                // make sure the job isn't already registered
                foreach (SPJobDefinition job in site.WebApplication.JobDefinitions)
                {
                    if (job.Name == TASK_LOGGER_JOB_NAME)
                        job.Delete();
                }

                // install the job
                Reminder.FeatureCode.Test taskLoggerJob = new Reminder.FeatureCode.Test(TASK_LOGGER_JOB_NAME, site.WebApplication);

                SPMinuteSchedule schedule = new SPMinuteSchedule();
                schedule.BeginSecond = 0;
                schedule.EndSecond = 59;
                schedule.Interval = 2;

                //SPSchedule customSchedule = SPSchedule.FromString("daily at 01:45");

                taskLoggerJob.Schedule = schedule;

                taskLoggerJob.Update();
            });
        }
        catch (Exception ex)
        {

            LogError(ex.InnerException.ToString(), ex.StackTrace);

        }
    }

    public override void FeatureDeactivating(SPFeatureReceiverProperties properties)
    {
        SPSite site = properties.Feature.Parent as SPSite;
        // delete the job
        foreach (SPJobDefinition job in site.WebApplication.JobDefinitions)
        {
            if (job.Name == TASK_LOGGER_JOB_NAME)
                job.Delete();
        }
    }

    public override void FeatureInstalled(SPFeatureReceiverProperties properties)
    {

    }

    public override void FeatureUninstalling(SPFeatureReceiverProperties properties)
    {

    }

}