It's fast, easy to use and it's very nice looking. I like that you can open as many different emails as you want in one screen. You can also view attachments without downloading them. Also, you can drag and drop your files from Finder or another app into the airmail window to attach them to the mail. At this price point, there shouldn't be any issues as long as you are computer savvy. If you know how to work with computers, I highly recommend Air Mail. Having multiple projects at once doesn’t have to be complicated. This app allows me to be able to use all of my devices (Macs, iPhones, iPads) in one place. This application has all my important emails, contacts and addresses in them without having to go through each one individually ( which can be time consuming or frustrating). The ability to send or read multiple mail at once also works well with this software! Very easy program to navigate and use. Nothing really as I have no negative comments about it so far but i would like if they could make some changes. You will love how fast you are able to get things done when using AirMail App and Emails!!