MailItem.ReminderOverrideDefault Property (Outlook)
Returns or sets a Boolean value that is True if the reminder overrides the default reminder behavior for the item. Read/write.
Syntax
expression .ReminderOverrideDefault
expression A variable that represents a MailItem object.
Remarks
You must set the ReminderOverrideDefault property to validate the ReminderPlaySound and the ReminderSoundFile properties.