Easypost will send updates to CFWebstore about the status of each package. In order to send an email or text message when the package is delivered, you need to turn this service on at Easypost. 

1. Login to your Easypost account, click on 'Webhooks & Events', click on 'Add Webhook'. 
   
    
2. Enter in your tracking back URL - https://www.domainname.com/index.cfm?fuseaction=shopping.tracking&do=webhook and then click 'Create Webhook'. 
   
    
3. Easypost will now send shipping updates to your store. The only notification we use is Delivery. You could setup updates for every stage of shipping where the package is scanned.