Whatever your comfort level is, you can use the following pointers to check that your privacy is where you want it to be.
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Sometimes mail has to be sorted manually because of a damaged barcode or the handwriting is too bad for a computer to read or they miss the right container when throwing it in and don't notice.
Although your browsing history is hidden from the public, you may feel a bit creeped out by it.
Obviously, have mods ready to respond to and delete anything personal.
Or do you have any good ideas you use to protect yourself as a streamer? Can Amazon Prime be used internationally? Anyone can go to their PayPal account and see their transaction history.