The mixed messages from MyUS regarding Premium + Mail are a concern. Although their website no longer shows that as an option.
In summary, the ‘higher cards’ are sent by Amex by (tracked) courier delivery to the Receiving Dock at Express Lane. Items are received by MyUS in bulk, not individually sorted at this time, from a range of couriers throughout the the day. So, on delivery, the courier can confirm that your delivery has now arrived at MYUS (through Amex if necessary).
Then a delay of a few days until notification by MyUS, advising you that the item has been sorted to your suite.
However, as the “Lower Cards” are currently shipped by Amex as ordinary USPS (letter) mail to MyUS, no tracking is provided. I can only assume that it’s normally the end of the line for these letters (and cards). Those that are returned by MyUS to Sender (Amex) could well raise a red flag and Amex may reach out to you if that happens.
However, their system is far from foolproof. I have previously mentioned where I sent a test envelope by ordinary (airmail) from Oz, through Australia Post, containing an old expired/cancelled credit card to my suite at Express Lane. It was an ordinary letter (no tracking) was delivered to Express Lane (presumably by USPS), and was actually processed by MyUS and made it back to my address in Oz. I did not have the Mail (letter) option.
Of course we cannot rely on that happening too often, as essentially it’s an oversight/mistake on their part. Good if it does but unfortunately there may be plenty of disappointed people missing out on receiving their cards.
The trick may be to convince Amex, if possible, to “expedite by courier” for our “Lower Cards” to our residences in Sarasota.
If that happens, then the card can be processed into the suite, ready for delivery to Oz. However, I’m not too sure how to go about this. I wonder if some request to ‘expedite delivery by courier’ due to the (well publicised) delivery delays currently being experienced by USPS?
I know that some have contacted Amex to arrange for their card to be couriered direct to an address in Oz, as they are currently out of the US, on holidays.