FWIW I live in Manhattan NYC, we haven't got any mail since Friday and other areas in the city are the same
I went down to the local PO to see if they had a package there that was held up, fortunately they had and the guy was willing to go dig around for it.
He said their casualty list was "extensive", especially in mail carriers and I would assume it is the same in most major US cities / mail hubs. They have sorting guys etc out trying to do the rounds
They are having to scrabble around for their own masks, gloves etc.
I've had very slow mail going out of the city too.
They all get a round of applause from me, and if it's still being tracked at all I'd cut them huge slack