I set some alarms using older mail program that came with OS X 10.6. During all upgrades, the alerts were preserved, but now I want to remove them and I can't find where they are defined. They are not in reminders, not in calendar, not on mail program. I'm now running on iMac, OS X Mavericks (10.9.3)
In Reminders there should be a folder titled 'Notes' where all your old Mail todo's have been moved. To see your folders you have to click one of the buttons on the bottom right of the side-menu. There should be a similar folder in the Notes application where all your old Mail notes have been moved.