+Implementation
+--------------
+
+public-inbox stores mail in git repositories as documented
+in https://public-inbox.org/public-inbox-v2-format.txt and
+https://public-inbox.org/public-inbox-v1-format.txt
+
+By storing (and optionally) exposing an inbox via git, it is
+fast and efficient to host and mirror public-inboxes.
+
+Traditional mailing lists use the "push" model. For readers,
+that requires commitment to subscribe and effort to unsubscribe.
+New readers may also have difficulty following existing
+discussions if archives do not expose Message-ID and References
+headers. List server admins are also burdened with delivery
+failures.
+
+public-inbox uses the "pull" model. Casual readers may
+follow the list via NNTP, Atom feed or HTML archives.
+
+If a reader loses interest, they simply stop following.
+
+Since we use git, mirrors are easy-to-setup, and lists are
+easy-to-relocate to different mail addresses without losing
+or splitting archives.
+
+_Anybody_ may also setup a delivery-only mailing list server to
+replay a public-inbox git archive to subscribers via SMTP.
+