This tutorial describes the steps you need to do in both Cleanmail CH (cmv5) and Azure Active Directory (Azure AD) to configure automatic user provisioning.
When configured, Azure AD automatically provisions and deprovisions users to Cleanmail using the Azure AD Provisioning service.
For important details on what this service does, how it works, and frequently asked questions, see Automate user provisioning and deprovisioning to SaaS applications with Azure Active Directory.