Could be I do have the UPS app on my phone, as well as Hermes it seems...!
As each app is linked to my house address I do know that the UPS one will tell me if there are any parcels due for delivery that day regardless of getting a tracking link or number.
The Hermes app has informed me that they have a parcel to deliver, from an eBay purchase, again without a tracking number.
The DHL is now installed and hopefully will work the same, it appears it will as I have just set it up.
The agent I spoke to at Dell even confirmed my email and mobile, must have got messed up with DHL.
I noted one or two others from the HotDeals thread didn't get any notice before delivery either.
Main thing for me is that I have the monitor and it arrived safely.