New Outlook for iOS and Android App Configuration Policy Experience – General App Configuration

We are planning to migrate 20,000+ users globally from native iOS email client over a period of a few months.  Testing has shown that we are now reasonably happy with Outlook for iOS from a company perspective.  The only part of the jigsaw left is how we handle the disablement of the native iOS mail client following a successful Outlook for iOS deployment.  We need to achieve one of two things:

1. Automatic disablement of the native iOS email profile.

2. Automatic removal of their native iOS email profile (also solves the problem of company data remaining in this email profile)

Testing until now has relied on the end user manually disabling their native email client, but we found that this doesn't always happen causing confusion and support calls.

Is there a way to achieve this?