Hello OoSuperGameRoO, :wave:
If you have Mozilla Thunderbird™ as your email client (
like I do), you will need to make a couple of extra adjustments in Ccleaner; the screenshot below hightlights them:...
It used to infuriate me when the Preview Pane was always open, and when Thunderbird™ was opened it showed the email account name; not the Inbox.
By unchecking all boxes apart from the two highlighted in my screenshot, this anomily will not occur.
As medab1 mentioned; I too use Ccleaner every day just before shutdown.
Hope this information is helpful.
Kind Regards,