Silent Inbox holds distracting emails and sends them to you when youâre not busy Published: Dec. 16, 2020 at 6:00 a.m. ET By Resize icon MarketWatch has highlighted these products and services because we think readers will find them useful. This content is independent of the MarketWatch newsroom and we may receive a commission if you buy products through links in this article. Did you know that Americans spend an average of five hours a day checking emails? Thatâs understandable, given the digital nature of our work. However, how much of your time is spent reading newsletters and ogling at holiday shopping deals as opposed to doing actual work?