https://thenextweb.com/offers/2020/12/02/silent-inbox-prioritizes-your-gmail-automatically-so-you-never-miss-anything-important/

TLDR: Silent Inbox keeps your inbox clean and you on task, holding newsletters and other non-essential emails until you’re ready to see them. 

Email is like an avalanche. What starts with just a few disruptions at the beginning can quickly turn into a rumbling landslide that can ultimately leave you buried underneath. Each time you buy from an online store or join a new digital group usually comes with new email ads, newsletters, or other pieces of digital filler flooding into your email box.