No- I am not at all surprised. FWIW I use FF only. The simplest way to deal with their tweaking is to use Rules. Create a folder called Food (or whatever you want to call it) When you get a message from say Chef Pancake- create a rule which says Send All messages from Chef Pancake to Food folder. If you do this with each one you'd like to keep- eventually they will all go there and not into your junk folder. Yes, it's a PITA, but it does work.