Go to System > Configuration > Breakdesigns Extensions > ShipTracker
Settings regarding the use of the Web API service
1. Select the service you are going to use as Web API.
An active account with adequate credit is required, in order the extension to track the shipments
2. Enter your API Key
The Web Api services, provide an API key, to their users, that allows access to their API.
To get your API Key, you better address to your service's documentation and support.
3. Set the period/days that you want a shipment, to be monitored (Shipments Monitoring Period). The maximum limit is 60 days.
4. If your shop is already in production and has orders and shipments, you better limit our module to monitor shipments (POST new shipments) created before some days, instead of monitoring all of them. This will spare credits and resources to your Web API service, for shipments that are possibly delivered. For that you can use the setting, New Shipments Lookup Period
With these settings you can determine, when and which notification emails will be send to the customer.
All the email templates, can be customized and overwritten as any email template in magento.
For more details on that topic, please read Customize email templates using the Magento Admin.
If you create your own customized email templates, you have to come back in this section and select your prefered template.