curl --request GET \
  --url https://brew.new/api/v1/analytics/campaigns \
  --header 'Authorization: Bearer <token>'

{
  "campaigns": [
    {
      "emailId": "eml_launch",
      "title": "Spring Launch",
      "sentAt": "2026-04-08T12:34:56.789Z",
      "stats": {
        "sent": 5000,
        "delivered": 4920,
        "opened": 2110,
        "clicked": 540,
        "bounced": 80,
        "complained": 3,
        "unsubscribed": 12
      }
    }
  ]
}