Google updated two months ago iOS application Inbox, adding support for the iPhone X. However, the company announced this week that it will end the service at the end of March 2019. The service offered users features such as snooze emails, smart replies, high priority alerts and more. Google says it's learned a lot about how to make email better in the app's four years of life, so it's added some of Inbox's most popular features right into its main Gmail client.