IF and it's a big IF you don't get a delivery and there is mail, then the postie will get into serious **** if he doesn't attempt delivery. It's called Wilful Delay and it's a sackable offence.
I'm not saying he's doing it but Saturdays are generally a quieter day of the week for mail so there's a very high chance you don't have any. Some people on the rounds I do only get about 1 letter a week and that's junk mail usually.
I've had them card me before without even trying. They had the card ready and just put it through the door.
I shouted the postman back, and he let it spill that he'd been told by the senior post master to not deliver anything to my address.
When I went in to complain at the depot, they swore blind that they did no such thing, and blamed it on him not knowing what he was doing because was from another depot, covering someone else.
It was no coincidence that days before I had a parcel that I had to collect that they wanted me to pay the best part of £20 for because they couldn't scan it (the sender had printed the label out so big that their scanners couldn't read it) so they wanted me to pay them for it.
I already had the parcel at the time, and I decided to take the parcel after they told me they'd send it back to the central hub and I'd likely never see it again (there was no return address on it, and the item was quite expensive). So I wasn't risking that.
For about a week afterwards, they started playing games with my mail until I went in again and had a go at them. They were pretending they didn't have items I had been carded for. One even shown me the screen on their computer, telling me that my address wasn't even on there. I pointed out it was, he got up and went straight to where he'd put it with no explanation as to what that was just about.
Another item I didn't even get carded for, and it turned out that they'd had it there and just didn't bother trying to deliver it. When I went in, they said it wasn't there. So I went back to the seller, got the tracking number, which said it was actually at the depot. I go back in and they say it's been sent to central depot that morning (and tracking confirmed this).
I had a go at them, and spoke to one of their more mature managers about it, and it's since stopped.
But it goes to show that even if you catch them out for wilful delay and go to the depot about it, doesn't mean that something will be done.