I’m a looking for a way to stop the synchronization of emails from the
PO to the GMS server. Users are not allowed to sync their emails. I use
profiles to disable this feature, but mails still appears on the Web

From https://localhost/admin/diag - Email Accelerator Settings - there
is “Groupware Sync folders:”.

I unselected “Email folders (Inbox/Outbox/Sent/Draft)” but it did not
work. So I suppose the “Groupware Sync folders:” settings are for
another purpose?

By the way, how can I get a technical documentation of GMS that
describes all the things we find in https://localhost/admin/diag?