Uncheck the box "Optimize Mac Storage" if you have enough space on your drive.
According to Apple’s instruction manual I understood that files would be stored on the cloud only if the Mac were running low on space. My 14” MB Pro has ample storage space left, and so I assumed that all the original files would be stored on the internal solid state drive. Much to my surprise, the large Master file that I needed for the template was not stored on my Mac.
Storm in a glass of Apple juice
Websites that are talking about this threat are loaded with advertisements. And, that’s what this is all about - "scare mongering" to get eyeballs on the ads, so they can generate money.
Empty your inbox
Many people are completely overwhelmed by it. The easiest way would be just to “declare email bankruptcy” by deleting them all. For most people this is a terrifying thought. Learn how to quickly eliminate the number of emails in your inbox and keep them organized.
Find your passwords
How to find the password stored on your Mac in the Safari - Chrome - Firefox web browsers
Fix Your iPhone Email Not Updating
12 Steps from easy to hard to Fix the iPhone email not syncing.