Question… my iMac is starting to show signs fo being full of cruft… I am seriously considering wiping it and reinstalling macOS and starting over… lots of conflicting within myself as I ponder this move… any thoughts about how to keep what’s important? I got my first Mac in 2009, and have never done a clean install of anything… when I upgrade, I use either a Time Machine backup or a CCC backup from which I restore… so I have almost 10 years of crap carried forward… The basics I get: Make a current backup (or two) I have access to all non-MAS software, including registration keys iCloud will restore Keychain, Contacts, Calendar, etc I also have questions... How can I get my old email back on my newly set up iMac? If I export all mailboxes, will that work? What about any email attachments? Can I still access old TimeMachine backups if I create a new account? Will I get locked out because I am not the same "me" that created the backups? Has anyone here done such a thing? Is it worthwhile? What issues can I expect to arise?