Title.
This applies to all countries, but please state where you are from to avoid confusion.
With the amount of junk mail people get weekly, I was curious if there are ways you can block, remove or filter the actual mail from ever getting to your mailbox.
I don’t know but I doubt it. When logistics were way more expensive they were probably only available to rich people.
Like a lot of the free or cheap services we use today, the US Postal Service is supported by ads.