Currently after every pagespeed scan, we sent out a notification to user with all the scores and metrics. Receiving this notification can be bit annoying.
So We've made this notification smarter
In the pagespeed monitoring settings, you can set threshold (a score that you're expecting for a metric). While we scan your website, if we find any of the scores are less than what you've mentioned, we will send you notifications.
That's less notification than before but more informative