AfterShip is totally free for tracking shipment of over 450+ couriers. With the free AfterShip account, you can track and audit all your shipments (unlimited number of shipments) for free. You can also install free apps like Track Button or store connectors with different shopping carts (e.g. Magento, Shopify, eBay).
Upgrade to Premium to send out delivery notifications to customers or yourself. Your choice of notification triggers - In transit, Out for delivery, Delivered, Failed delivery attempt or Exceptions. Use your own email to send out notifications, and customize messages to add store logo, URL, a tracking link to get more returned customers after shipping!