What are some free (or super cheap) virtual mailbox/address mail forwarding services?

I want to get a separate mailing address so I don't have to share my home address with my letter recipients.

Basically, just an address to use as a return address in case the letter is returned to sender or someone sends something back.

It will likely be unused so I don't want to pay the $15-$20/month like the big services offer.

Most services are $10-$20/month + shipping/scanning fees. I found a few that offer lifetime addresses for a one …

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