That's all nice and dandy, but check this out. For a few months now I've been noticing that emails from my inbox were being moved after a few days into spam, without any kind of warning. This happens once every two weeks, more or less.

We're not talking about false positives, these are emails that stay in my inbox for days before being moved to the spam folder. Which basically means I need to check my spam folder every day. Trust forever lost.