I occasionally run into issues where mairix mis-parses mail - but they
are mostly spams that I haven't deleted.  Otherwise, I am basically
happy with mairix.  I see it as mature software that doesn't need
regular maintenance.

I haven't run into 
On 2015-Jul-03 19:13:28 +0000, Eric Wong <normalper...@yhbt.net> wrote:
>José García Juanino <jjuan...@gmail.com> wrote:
>> Hi, take a look to notmuch, it is a alternative to mairix and works very
>> well. Regards.

I just had a look at notmuch and decided it was notmuch use since it can't
handle mbox.

>Unfortunately, my mairix database is around 750M with around 11GB of
>mail and updating it takes a while...

I have ~20GB mail (all in mbox format) spread over several directories
(which is another thing notmuch can't handle) and my database is
~670MB.  Building the database from scratch is rather time-consuming
but I virtually always just do an incremental rebuild - which takes
about a minute.

One performance issue I did run into was that mairix's approach of
creating a big mmap region and writing into it causes problems on
FreeBSD+ZFS.  My hack-around was to malloc(3) the space and then
write(2) it at the end - this doubles the size of the process when
rebuilding the database but it massively sped it up.  I have been
toying with getting rid of the massive malloc()+write() by either
creating an alternative database format with the indices at the end
(so it can be written sequentially) or using writev(2) to build the
database in pieces.

-- 
Peter Jeremy

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