eM Client works very well, far fast than Outlook, but to be compatible with an office365 account would need to sync categories.
I use categories to organize emails. If I put a personalized category from Outlook/web client I can see on eM Client, but I can’t categorize the emails with this category. There are only the standard colored categories.
I use eM Client in different computers and is the same. I I create a category in one computer it doesn’t sync to another computer.
I would be very happy if you make 100% compatible eM Client with Office365 categories.
Thanks and Best Regards!