Data File Backups
When Outlook opens, all data files listed in the Account get a new date stamp which then is recognised by backup software as being a changed file.
This happens even if that data file has not been looked at. I have 20 data files with a total size of over 60GB. On a daily basis I use maybe 5 of these data files and occasionally some of the others.
Backing up 60GB of files every night is time consuming and wasteful and it is impossible to upload them efficiently to the Cloud, OneDrive or another.
I would suggest that a Data File is not changed in anyway unless the file has been opened. This would solve this problem.