How do I achieve pseudo-anonymous postal mail?

Questions
1

A step in my privacy journey I’ve been considering for a while but seems like a pain: pseudo-anonymous postal mail. I’d like to finally try attacking it.

I say pseudo-anonymous because it seems as if (1) LLC owners can be easily tracked down and (2) I’m not interested in fetching stuff sent to abandoned buildings.

Threat model: surveillance capitalism, dragnet surveillance

Story: I do online shopping with various vendors who are not Amazon and would like to protect my information from businesses such as Shopify.

Current mail protections: Privacy.com cards, fake billing details, rental mailbox, unique email addresses, burner number

Regarding the mailbox: paperwork is required for all addressees. I’m unwilling to risk packages being rejected due to using an unlisted name.

Do you have experience with this use case or similar? I was thinking an LLC named something like Hamilton Jones LLC. Send packages to Hamilton Jones. To avoid weird tax situations, I would never use this specific LLC for anything financial.

Of course, some mail would need to be in my government name. Is it safe to use the share the same mailbox that I send LLC addressed mail to?

2

If it’s a US PO Box they will reject mail to names not listed as authorized users but “Postal Customer” is always a valid recipient and specifically listed as what you can use to mail to a PO Box without using the addressee’s name

The occupant address format (“Postal Customer” or “Occupant,” “Householder,” or “Resident”) may be used to address mail selectively to a rural route and box number, a specific street number, or a specific Post Office box number without using the addressee’s name

Depends on your threat model. In most cases I’d say yes, but if you need to avoid all risk of deanonymization by those mailing to you without using your real name, maybe not.

3

That something I’ve used in the past (Postal Customer) and it’s pretty great.

Unfortunately this PMB situation - without giving too much information away. This shop has delivered mail of previous customers to my box. I don’t know if this is the result of lack of enforcement or a true mistake. These were also paper letters - a package might trigger more scrutiny. For my use case, reliably getting my stuff trumps ultimate privacy.