Hello,
I am a very happy user of AquaMail Pro (v 1.10.0). I have just switched to a new phone - Sony Xperia XZ Premium (Android 7.1.1) and came upon a new issue.
There is no notification badge on my AquaMail icon

.
I couldn't find anything applicable in the settings window. I just can switch the style of the AquaMail widget. It works properly with the standard Android style of badges, while the Samsung TouchWiz style limits the number display to 99. However, the badge on the main icon (which I keep in my dock) is not visible.
According to your help page, the badge should work on the new Sony Xperia phones. What's more, the badges work in case of some other applications (even the 3rd party apps, like BBM).
Could you kindly please correct this issue? I think the way to resolve it is to implement the new Xperia Home Badge API:
link: developer.sony.com /2016/06/23/xperia-home-badge-api-now-publicly-available/
I have also found a StackOverflow thread about a similar matter, which might be helpful to you:
link: stackoverflow.com /questions/20216806/how-to-add-a-notification-badge-count-to-application-icon-on-sony-xperia-devices
All best,
Marcin.