
Outlook kept wanting to "rebuild" my mailboxes, which required two or three times the original mbox size (~500G at the time of loss). I had only mixed success - my user environment must have been corrupted by the drive failure, and even 1 year old backups would not get me my state back. These were emails from previous jobs, to which I no longer had access, so my local cache was my record. After losing a decade's worth of archived Outlook emails, to a drive failure, I tried restoring from TM. Is there something under this path that I can safely exclude from my Time Machine backups?ĭon't have a real answer, just data to share. I find the latter hard to believe, especially since the path contains "Outlook 15". I can't tell whether that is because excluding these files is unsafe, or because MS Outlook 16.x is too new for people to have discovered these files. However, searching the internet for files to exclude from Time Machine backups never mentions this path. Therefore, excluding these from hourly backups seems reasonable to me. If I ever had data loss, those email messages and attachments would be downloadable again from the Outlook server. I believe MS Outlook 16.x downloads email messages and attachmentsįrom the Outlook server under here, just for indexing and speed reasons. I'm hoping I can exclude something under here from Time Machine backups that will safely reduce the size of every hourly backup. I've determined that the main culprits are under ~/Library/Group Containers/UBF8T346G9.Office/Outlook/Outlook 15 Profiles/Main Profile. Every hourly Time Machine backup is quite large for me, but I don't change that many files so rapidly.
