download an [mbox file](https://notmuchmail.org/archives/notmuch.mbox)
of the entire mailing-list.
-There was a temporary list at
-[freelists.org](https://www.freelists.org/list/notmuch), which holds archives
-for April to September 2017.
-
The `mb2md` utility can be used to convert the archives to maildir
format which is convenient for reading the archives within notmuch
itself.