This is a very early first impression, based mostly on my set up experience. Set up was frustrating. I loaded Airmail on to an iPhone, an iPad, and a MAC. Adding iCloud mail addresses required app specific passwords. Easy enough, but my experience was that I needed to generate a different password for each devise. In the end it worked, but the process was painful. I needed to add a “generic” email account, too — from Comcast. This was fairly simple on MAC. I could, separately, test the settings for imap and stmp. That made it easy to isolate any errors, and then correct them. Set up on my iOS devises was much more difficult. For some reason I have not yet figured out, my log in attempts failed time and again. I checked my settings and, then, checked them again. Everything seemed to be correct. Apparently it was not, but I could not figure out what was wrong. Finally, after wasting considerable time, everything fell into place. One everything was set it appeared that Airmail will meet my needs quite nicely. I am optimistic!