It's still sending the spurious event notifications.
Cool, thanks for the quick feedback! :)
ErrorInvalidPropertySet Set action is invalid for property.
davmail.exception.DavMailException: Invalid date
I just upgraded to DavMail 4.8.4.2570 and the NullPointerException is still happening. I don't know about the spurious event notifications yet but I'll post an update if I hear any complaints. 2018-04-10 09:24:41,458 ERROR [CaldavConnection-39352] davmail - java.lang.NullPointerException java.lang.NullPointerException at davmail.exchange.ews.ItemId.<init>(ItemId.java:59) at davmail.exchange.ews.ItemId.<init>(ItemId.java:39) at davmail.exchange.ews.EwsExchangeSession$Event.createOrUpdate(EwsExchangeSession.java:2100)...
(cedet-global): Switch to process-file