It's very unfortunate that Push mail is a problem on Aqua mail. I work in the IT department of our Organization with about 15k employees and subcontractor and we recommended Aqua Mail as a mail client over Outlook for some time now.... it's actually on our Preferred mail app when possible. After having so many issues with Aqua mail's push features and the Outlook mail app mot having such issues, we will have no choice to remove Aqua mail from our recommended and approved app list. We hate to do this since aqua mail has been great for a lot of things over Outlook, but when it's not fucntional for email (which is what the app is made for) there is no other option. Outlook Mail for Android seems to work with no issues. We will add this back on our approved list once the push mail issue has been resolved.