OX without mail frontend

[technolion]

Hi,

we would like to use OX hyperion without the web frontend fro mail.
I created the users like this:

createuser --dbonly ...

When logging in the mail part is still available, but shows the error message

Error code: Folder not found: INBOX (MSG-0010,663616515-17)

Is ist possible to completely disable the mail web frontend (like it was in hymalia)?

Thanks!