For some reason, iOS 10’s Mail app changed how email threads work. Now, the oldest message appears at the top, which doesn’t really make sense for most of us, unless you really love scrolling through large blocks of text for fun. Macworld shows off how to fix it.
Head into Settings > Mail and under the Threading section, change the toggle to for “Most Recent Message on Top” to On. This will return it to the previous, sensible behavior where the newest email in a thread appears at the top, then it descends in reverse-chronological order.
Time Machine is a great service for backing up your computer, and by default it doesn’t use much CPU power to do it. That’s great most of the time, but sometimes you need to get stuff backed up as soon as possible. Defaults-Write points out the Terminal command for doing so.
To temporarily speed up those backups, open up Terminal (Applications > Utilities) and type this in:
sudo sysctl debug.lowpri_throttle_enabled=0
This prevents Time Machine from throttling itself, which makes it go much faster (and kills your CPU processing power while it does it). Once your backup is complete, you can turn it off with this command:
sudo sysctl debug.lowpri_throttle_enabled=1
This isn’t useful all the time, nor would you want Time Machine working like this normally, but it’s handy when you’re just trying to push a backup before you walk out the door.