Yeah, that method won't work. Almost every service that I use sends all 3 types of emails: paper trail, news, and occasionally something important. My approach

Yeah, that method won't work. Almost every service that I use sends all 3 types of emails: paper trail, news, and occasionally something important. My approach is to make custom rules for the most frequent emails based on sender and subject (the paper trail type emails often have predictable subjects). What's left is between 5 and 10 emails a day that I can sort manually.