@markboulton @rem @Netlify Routing common 404s to appropriate pages is lovely with the Redirects API.
If there is still a very high volume of 404 traffic, you could cheekily use Google to save bandwidth and recover some traffic:
[[redirects]]
from = "/*"
to = "https://www.google.co.uk/search?q=site:http://yoursite.com&q=:splat"
status = 404
My tweets and posts live here on my own domain these days.
You can explore them here and follow me on Mastodon instead of Twitter where I'm not currently active.