Junk button has a "not" symbol next to it
The circle with a line through it means "no" or "not", correct? So putting that next to the word "Junk" means "Not junk". Does this button actually mark an email as "not junk" as the icon would indicate? Nope, it does the opposite. I think you need a different icon for the "Mark as junk" button or simply use the words "Mark as junk" so that it's obvious. Having the button say "Not junk" is the opposite of what the button does.