Aqua Mail has completely ruined the old epithet that it is better to travel than arrive. Over the years I have liked nothing better to try out a wide range of Android email apps and finding their strengths and weaknesses before moving onto the next one. Aqua Mail has screwed that by being the best email app I have come across and will probably always be my email app of choice. The reasons are many and varied.
First, Aqua Mail has so many configuration options you will be lost for choice, well around 300 choices to be accurate. Whether it is changes in the interface you want to make or the way the app itself handles emails, there is an option that you will eventually find that suits you. I say eventually, because it took me several weeks of tweaking to get it just right.