Of course it allows search, and you can even customize that search if you have been subscribed for a long time by using your own mail client. Mailing lists also

Of course it allows search, and you can even customize that search if you have been subscribed for a long time by using your own mail client. Mailing lists also have a similar benefit to git where many people have archives (even if they are incomplete) so the content can't just be massively deleted easily.