Find a way to reduce or eliminate the size of the "Message Sources" Cache
Sort the size of the "Message Sources" cache.
Mine is 18GB, while the "messages" folder is less than 1GB and "Message Attachments" is less than 5GB. Why is "Message Sources" so big?
I only discovered this because Outlook had made several backups and filled my Hard Drive. I had to do some detective work to find where all this data was that was filling up my HDD and I eventually discovered the Outlook folder stored in the hidden ‘Library’ on my MacBook had around 90GB of files. This included the ‘Main Profile’ which held around 25GB and several backups of this which contain between 5GB and 25GB each.
Tech support didn't even know what this was or how it was created and I got some very vague answers as to how to deal with it, including some 'solutions' that did nothing to alter the size of the "message sources" folder.
For Outlook to be taking up 25GB of HD space when my actual messages and attachments take up less than 6GB is a little ridiculous, no?
What is the solution to this? I am facing the same problem !