New posts on unixshadow.com go out over RSS — no account, no newsletter, no tracking. Copy the feed link below and paste it into your feed reader.
https://www.unixshadow.com/feed/
It works in any reader: Feedly, Inoreader, NewsBlur, Thunderbird, or whatever you already use. Your reader fetches the raw feed from /feed/ directly — the link above is just the address it needs. New posts show up in your reader as they are published.