Inbox by Gmail aimed to improve email through several key features. Launched May 28, 2015; shut down April 2, 2019 — it lived 3 years. One of 37 Google products killed in 2019. Inbox by Gmail was an email service developed by Google. Announced on a limited invitation-only basis on October 22, 2014, it was officially released to the public on May 28, 2015. Inbox was shut down by Google on April 2, 2019. Wiki link Data: Killed by Google (killedbygoogle.com, MIT).