HT204032: How Power Nap works on your Mac
Learn about How Power Nap works on your Mac
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Helpful answers
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Sep 17, 2015 10:53 AM in response to MacVernby dominic23,Yes. Mail should be open. I am not sure about iCal.
- Mail, Notes, Contacts, Calendar, Reminders, Photo Stream, Find My Mac, and iCloud documents are checked every hour. To receive updates during Power Nap, Mail and Notes must be open before your Mac sleeps.