public static bool DeleteMessage(string storeId, string entryId, bool DeletedItems) { if (!DeletedItems) { OutlookSession.DeleteMessageImpl(storeId, entryId, false); return(true); } PairIDs folderIds = OutlookSession.GetDeletedItemsFolderIDs(storeId); if (folderIds == null) { OutlookSession.DeleteMessageImpl(storeId, entryId, false); return(true); } string folderID = null; IEMessage message = OutlookSession.OpenMessage(entryId, storeId); if (message == null) { return(false); } using ( message ) { folderID = message.GetBinProp(MAPIConst.PR_PARENT_ENTRYID); } if (folderID != null) { if (folderID != folderIds.EntryId) { if (MoveMessage(storeId, entryId, folderID, folderIds)) { return(true); } } } OutlookSession.DeleteMessageImpl(storeId, entryId, false); return(true); }