Yes, Airmail is still supported, but IMHO its UI suffers from severe feature creep. I also found it never reliably notified me that account passwords needed to be changed. I used it against MS Outlook, and whenever the password on the backend needed to be changed after 60 days, Airmail would simply sit there and not receive any new emails.
They definitely use "the cloud", but their FAQ may be able to answer some of your questions there too: http://help.cloudmagic.com/section/security/
Combined with the fact that my emails would have to pass through your server, that makes me uncomfortable.
CloudMagic Mac app has already reached #2 in Top Paid App on Mac App Store within hours of launch.
Over a period of time, we'll introduce more power features like email tracking, CRM integrations, etc.
I think we are building a ethical independent business here.
I didn't initially notice your privacy policy because there doesn't seem to be a link from the Mac app page. I had to go to the homepage by deleting the path from the URL in my browser, since I couldn't find a link to the main page on the Mac app page. I scrolled to the bottom of the page, as that's where these things usually are, but all I found was a trio of social media buttons. I scrolled back up and noticed the three-horizontal-lines symbol, which I correctly assumed would bring up a menu. I found the privacy policy under that.
I can only speak for myself, but I would have found it valuable to have an obvious link to the privacy policy on every page. I really wanted to find the privacy policy, because I felt a bit guilty about how tersely worded my previous comment to you was. Had I not been so motivated, I might have just looked at the page, thought it looked nice, then closed it when I couldn't find an obvious link to a privacy policy.
Anyway, thanks for answering my question. I hope I didn't come across as rude. I feel like a parent sending my kid to a sleep-over. I just want to make sure my data will be safe while it stays with people I don't know.
I rather not use the mouse at all during any email interactions.