Light weight  functional and stable The Android default email app is v boring n dull. I use K-9 for my two Outlook  one Yahoo and one own domain accounts. My two Gmail accounts are handled by default Gmail app. Though I thought it was slow in push notifications  but that seems to be working ok now. Everything I want from an email app works flawlessly in K-9. It's lightweight and superior in overall performance. Thumbs up!
June 23 2016