Mixpanel + Preact example

mixpanel.js

// A standard mixpanel track event takes a name and optional Properties
mixpanel.track("Viewed Dashboard", {"Gender": "Male", "Age": 21});

// Pass account context information along with each Track call using the following properties
{
  "_account_id": "333434",    // this should be your internal id for the account
  "_account_name": "Snapchat" // this should be a display name for the account
}

// pass those properties (along with any others you already pass) with each track call
mixpanel.track("Viewed Dashboard", {"Gender": "Male", "Age": 21, "_account_id": "333434", "_account_name": "Snapchat"});