https://techcrunch.com/2022/06/06/ios-16s-mail-app-will-now-let-you-schedule-your-email-and-undo-sending/

Along with a number of other updates coming in iOS 16, including a revamped lock screen, Apple is rolling out a series of updates to its built-in Mail app. Most notably, it will now allow users to schedule emails to be sent ahead of time, and users will be given a moment to cancel the delivery of an email message before it reaches the recipient in the case they spot that a last-minute change is required or they realize they forgot the attachment.

These features and others rolling out with iOS 16’s Mail app will help make Apple’s native email app more competitive with rivals like Gmail, which have offered these key features for some time.