curl https://api2.ecomailapp.cz/campaigns/1 \
  -H "key: YOUR_API_KEY" \
  -H "Content-Type: application/json"

{
  "id": 1,
  "from_name": "From name",
  "from_email": "from@foo.cz",
  "reply_to": "reply@bar.cz",
  "title": "My first campaign",
  "subject": "First hello",
  "recepient_lists": {
    "segments": [
      { "id": "segment_abc123", "list": 1 }
    ]
  },
  "sent_at": "2025-01-10 08:30:00",
  "recipients": 100,
  "status": 3,
  "archive_url": "https://foo.ecomailapp.cz/campaigns/render/1/randomhashhere",
  "stats": {
    "inject": 100,
    "send": 99,
    "delivered": 99,
    "open": 40,
    "total_open": 45,
    "click": 12,
    "total_click": 15,
    "hard_bounce": 1,
    "spam": 0,
    "unsub": 2,
    "openrate": 40.4,
    "clickrate": 12.12,
    "delivery_rate": 99
  }
}