I realised I have about 20 messages in my inbox which Mac Mail thinks are spam from "courier" companies like Fedex and UPS and other FIrst Class Postal Services and things. Does anyone know what the deal is? I also had one REAL one (I think, at least I was expecting a parcel!) from HK post which says it's being held at the On Ting post office... not sure if that's what triggered all the rest or what... Anyone else any ideas?