feature request: fetch missing keys in the background

[David Bremner]

Antoine Beaupré <anarcat at orangeseeds.org> writes:

>
> https://notmuchmail.org/pipermail/notmuch/2018.txt.gz
>

The short answer is that pipermail does not produce correct mboxes. I'm
not sure all that is wrong with them, but I noticed it mangles the
'From ' and the 'From: ' lines. It is probably some "anti-spam" measure
that was effective in the early 1980s.

The other mbox (full archive) should be correct.