Google Gmail "cached data mean" Questions

After deleting emails and trash is emptied, why do I keep seeing the deleted emails pop up momentarily when I either reboot , and then they go away again. I would think that one the item is deleted it

...mean that you are trying to get the email from an Android device. Just go to settings, account, and where you see the google account tap it and delete this account. Now within setting, go to Apps, ...

...data/files, and/or your registry is cluttered up with un-used stuff. In such a case, it helps to clean out the "junk" (e.g. using CCleaner ) and de-frag your disks (regularly). Sometimes, it helps to ...

...data storage device. Right-click on the file and wait for the menu of options to appear. Hover your mouse over the "Send-To" option and select "Compressed Folder." Allow the new compressed file to be ...

...mean you need no password to login, that's not entirely correct, since you do need a password, however if you keep the "Keep Me Signed" box ticked, it means you will stay logged in even if you close ...