Using Outlook for Android for personal email and calendar management
There is a workaround you can try to access the Exchange account option in Outlook for Android, even when the initial setup screen only offers IMAP and POP3.
- Select either IMAP or POP3. It doesn't matter which one, as we're only using this to reach the next screen.
On the next screen, look for the question mark (?) icon in the upper-right corner.
Tap it and select Change account provider.
You should now see the list of available providers, including Exchange.
Select Exchange and continue configuring your IONOS account using your Exchange credentials and server information.