If you do not want to renew your domain and would like to disable the renewal notices, please follow these steps:

1. Sign in to your Dynadot account.
2. Select "My Domains" from the left-side menu bar and click "Manage Domains" in the drop-down.
3. Check the box next to your domain name(s) and click on the "Action" button.
4. Choose "Renew Options" from the "Action" list.
5. Select "Do Not Renew" from the drop-down menu.
6. Press the "Save Settings" button to save your changes.

You can also choose to delete your domain if you don't want to wait for the expiration.