Send scheduled Reminder/Alerts by email in SharePoint

using System;
using System.Collections.Generic;
using System.Text;

namespace Mullivan.SharePoint.Reminders
{
    public class RmdHourlyRecurrence : RmdRecurrence
    {
        public override string Name
        {
            get
            {
                return "Hourly";
            }
        }

        public int StartMinute
        {
            get;
            set;
        }

        public override bool CanRun(DateTime lastRun)
        {
            DateTime dtNow = DateTime.Now;

            //If never run then run
            if (lastRun.Equals(DateTime.MinValue))
                return true;

            //If there is an hour between the two then it needs to run
            if (dtNow.Subtract(lastRun).Hours > 1)
                return true;

            if (dtNow.Hour == lastRun.Hour)
            {
                //If now is greater than the start minute and the
                // last run minute is less than the start minute then return true
                if (dtNow.Minute >= this.StartMinute &&
                    lastRun.Minute < this.StartMinute)
                    return true;
            }
            else if (dtNow.Minute >= this.StartMinute)
                return true;

            return false;
        }
    }
}