For me the biggest pain was email.
I created a free and open source set of filters to fix this. Soooo much better.
https://unfuck.email
This addresses email notifications only. There is a lot of apps that would send you notifications that you want to see like your hardware needs attention but also sends some useless promo notifications
alt Hacker News
This addresses email notifications only. There is a lot of apps that would send you notifications that you want to see like your hardware needs attention but also sends some useless promo notifications