There are lots of forwarding services available. I don't live in either of the countries that mail ghost services and use a different forwarding service myself.
That is an interesting service indeed. Do they offer that in the USA?
There are a huge amount of services like that offered in the USA. Some fully anonymous and some pseudo anonymous.
Quite a few of them like mail ghost also have bitcoin payment facilities.
Some will scan mail for you so you can read it online.
The main reason I use forwarding is because it gives me access to US products and the overseas shipping is quite reasonable. They repackage it for me as well if the packaging is not great.
https://myswissmailaddress.com/en/anonymous-swiss-mail-forwarding/ Swiss annon
https://mail-ghost.com/ UK
https://www.post.ch/en/private/receiving-mail/redirect-mail-private Swiss
https://physicaladdress.com/ USA
https://www.shipito.com/ USA
https://planetexpress.com/ USA
https://www.usa2me.com/ USA
Great list xtraelv, thanks!!