diff --git a/docs/services/infisical.md b/docs/services/infisical.md
index aac4486..29c5e7c 100644
--- a/docs/services/infisical.md
+++ b/docs/services/infisical.md
@@ -52,7 +52,28 @@ Hosting Infisical under a subpath (by configuring the `infisical_path_prefix` va
 
 Public registration can be enabled/disabled using the `infisical_backend_environment_variable_invite_only_signup` variable.
 
-We recommend installing with public registration enabled at first (which is the default value for this variable), creating your first user account, and then disabling public registration by explicitly setting `infisical_backend_environment_variable_invite_only_signup` to `true`.
+We recommend installing with public registration enabled at first (which is the default value for this variable), creating your first user account, and then disabling public registration by explicitly setting `infisical_backend_environment_variable_invite_only_signup` to `true`. Enabling invite-only signup requires that you configure [Email configuration](#email-configuration)
+
+
+### Email configuration
+
+As described in the Infisical documentation about [Email](https://infisical.com/docs/self-hosting/configuration/email), some important functionality requires email-sending to be configured.
+
+Here are some additional variables you can add to your `vars.yml` file:
+
+```yaml
+infisical_backend_environment_variable_smtp_host: smtp.example.com
+infisical_backend_environment_variable_smtp_port: 587
+infisical_backend_environment_variable_smtp_secure: false
+
+infisical_backend_environment_variable_smtp_username: infisical@example.com
+infisical_backend_environment_variable_smtp_password: ''
+
+infisical_backend_environment_variable_smtp_address: infisical@example.com
+infisical_backend_environment_variable_smtp_name: Infisical
+```
+
+For additional SMTP-related variables, consult the [`defaults/main.yml` file](https://github.com/mother-of-all-self-hosting/ansible-role-infisical/blob/main/defaults/main.yml) in the [ansible-role-infisical](https://github.com/mother-of-all-self-hosting/ansible-role-infisical) Ansible role.
 
 
 ## Usage
@@ -61,4 +82,4 @@ After installation, you can go to the Infisical URL, as defined in `infisical_ho
 
 As mentioned in [Authentication](#authentication) above, you can create the first user from the web interface.
 
-If you'd like to prevent other users from registering, consider disabling public registration by explicitly setting `infisical_backend_environment_variable_invite_only_signup` variable to `true` in your configuration and re-running the playbook (`just install-service infisical`).
+If you'd like to prevent other users from registering, consider disabling public registration as described in the [Authentication](#authentication) section and re-running the playbook (`just install-service infisical`).