I have used AltaMail for several months as my main email program on my iPhone 7 Plus and before that, my iPhone 6s Plus. I am a computer programmer with over 50 years of experience. I have purchased over 1,000 apps. I constantly evaluate different apps in each category of app that I use. Perhaps 6 to 9 months ago I decided to download all the top email apps and try them. I wanted something at least as good as Google Mail (Gmail), which I have used for years. AltaMail is vastly more powerful and flexible even than Google Mail. In addition, if there is any feature that any other mail app has, then that feature is in this program. That made for a little time spent setting the program up originally. However, the setup as it comes delivered is perfectly fine too. If you want something you can live with and grow with for many years, and that is always simple and easy to use and a delight to touch, then I recommend this email app, AltaMail, to you.