It is my understanding that each time DailyMail is run, it assumes one day has passed. So if it doesn't run for a week, none of the day counters get changed for that week. Once it resumes, then only one day's worth of followups will be sent even though they are all a week behind. You can click the "Daily Mail" button as many times as you want. Each click will act as though one day has passed and the appropriate followups for that "day" will be sent.