I managed to delete +100 emails tonight just…

I managed to delete +100 emails tonight just by scrolling down to year old emails. What's your best tip for heading to Inbox 0? From minimal research, it seems like the best solution for handling email is turn off all notification on mobile and desktop, and only check it certain times a day, for a certain period of time. i.e. 3 x 20 minutes/day. What works best for you?