Default email app is suggested after KLMS agent approval

We are using Office 365 default free MDM option included with E3 plan. I have created a very simple policy, only password and encryption is required with default settings. I have also enabled managed profile.

When i enroll a Samsung A510 phone it asks to accept Knox (KLMS Agent) agreement. I can't move forward without accepting it. When i do, it starts throwing a suggestion to add email account to Samsung's default email app. We prefer to use Outlook, but this notification keeps popping. Is there any way to make it go away? I have tried to clear its defaults and probably will try disabling notifications for Email app, but not sure if this will work.