Then again plenty of modern browsers have some type of profile syncing built in, which does all this for you.
> email inboxes
Please don't use POP3. Your inbox should live on a remote server and simply follow your account. Storing your inbox exclusively on your PC will make you very sad some day.
most cheaper/free email providers have a storage limit.
besides, i disagree conceptually. if i want to reduce the risk of my email being read or handed to someone i don't trust, then removing it from the server is a good idea. i can make my own backups.
On the desktop side, the GNOME online accounts feature is pretty good at getting you most of the way there.
Then everything works... until you try to adjust the display brightness.
This on pre-2020 Lenovo laptops.