_at.track(type, params) signature, where type is alias, event or attribute.
You can call these at any point on the page. Calls made before the Aimtell script finishes loading are queued and processed once it’s ready, and calls made before the visitor has granted push permission are held and sent after they subscribe, so nothing is lost by tracking early.
Alias Tracking
Associates an alias against the push subscriber for simplified server-side tracking.user field and/or the email field. All emails are automatically hashed.
Example
Event Tracking
Tracks an event against the current subscriber.category & action are required. label and value are optional.

