Flagged message but no reminder

I’ve flagged several messages but unless I specify a reminder time myself, I do not get any reminder at all. The item does not show a “bell” icon either.
How can I automatically set reminders on flagged items?

By default, flagged items will indeed not sound a reminder. To enable this go to;

• Outlook 2007 and previous
  Tools-> Options…-> button Task Options…-> option: Set reminders on tasks with due dates
• Outlook 2010
  File-> section Options-> section Tasks-> option: Set reminders on tasks with due dates

The reminder time that will be set is your default reminder time configured in;

• Outlook 2007 and previous
  Tools-> Options…-> option: Reminder time
• Outlook 2010
  File-> section Options-> section Tasks-> option: Default reminder time

There is a little “gotcha” for when flagging items with the “Today” flag though;
When you use this flag before your default reminder time, then a reminder is added.
If you flag this item after your default reminder time, then no reminder is added and you’ll have to set the reminder manually.

Example with the default reminder time set at 8:00 AM;
If you flag the item for Today at 7:30 AM, then you’ll get a reminder at 8:00 AM.
If you flag the item for Today at 8:30 AM, then you’ll get no reminder.