# Email Domain-Based Permissions Squirro allows you to add an email domain (such as `squirro.com`) to tailor access to an instance. Doing so allows anyone with a valid email address at the domain (such as `john@squirro.com`) to access the instance. To add e-mail domains to an instance, follow the steps below: ## Step 1 - Add a Domain to an Instance 1. Log in to Squirro. 2. Navigate to the Cluster space (also known as the _My Instances_ page). 3. Hover over an instance you have either _Owner_ or _Administrator_ access to. 4. Click the three-dots to open the drop-down menu, then click Domains. [](https://s3.amazonaws.com/download.squirro.net/docs/technical/ui/domain-1.png) 1. Click Add Domain, as shown in the example screenshot below: [](https://s3.amazonaws.com/download.squirro.net/docs/technical/ui/domain-2.png) 1. Enter the domain you want to add, then click Save. ## Step 2 - Create a Group for the Domain Create a user group named after the domain, using the naming convention ` Users`. Example: For the `squirro.com` domain, name the group `squirro.com Users`. For the steps, see the [Managing User Groups](../../technical/ui/user-groups.md#ui-user-groups) page. ## Step 3 - Add the Group to a Project Give the group a role in each project its members need, using Setup → Settings → Project Members. For the steps, see the [Managing User Groups](../../technical/ui/user-groups.md#ui-user-groups) page.