> ## Documentation Index
> Fetch the complete documentation index at: https://astronomer.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Disable outbound email

You can configure Astro Private Cloud (APC) to not send outbound email.

<Info>Setting `astronomer.houston.config.publicSignups: true` with `astronomer.houston.config.email.enabled: false` is only secure when all non-OIDC authentication backends are explicitly disabled and the OIDC provider provides sufficient user validation to prevent untrusted users from accessing APC.</Info>

To disable email transmission and email verification of users attempting to access the platform:

1. In your `values.yaml` file, set `astronomer.houston.config.email.enabled` to `false`.
2. Set `astronomer.houston.config.publicSignups` to `true`.
3. Remove the `EMAIL__SMTP_URL` list-item from `astronomer.houston.secret`.