# GitLab Self-Managed Integration: Authentication and User Management
### Introduction
If your organization uses GitLab self-managed, it's not possible to authenticate via the Git provider. In those cases, we allow Gmail and Office365 logins.
### Onboarding of Users
**Manually invite via email (default)**: You can invite users via the Aikido platform on the specified email, and the user will be able to access Aikido directly.
***
**Auto-onboarding**: Aikido can check whether the email that is being used for login is available in the GitLab instance. This is based on adding trusted domains. **Contact us** to help in setting this up or go to your Workspace settings and click 'Add Trusted Domain'.
{% hint style="info" %}
**Important notes on auto-onboarding**
* All users will need to have their 'public email' field exposed. Currently, GitLab does not allow yet to force this upon all users ([more info](https://gitlab.com/gitlab-org/gitlab/-/issues/9828)).
* The email used for login and the email in the 'public email' field need to be exactly the same. Aliases are currently not supported.
{% endhint %}
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