While there is a lot of great options for iOS mail clients, the built-in client is no slouch. Even after extended periods using third-party clients, I tend to always end up using the official app from Apple.
While it’s probably in need of an overhaul design-wise, it still holds up day to day use cases for me. I get a lot of email during the day, and I still feel like I can power through email on the iOS app just as well as I can anything else.
There are some features that I hope it gets in iOS 13 that would take it to the next level. Here they are: