curl "https://app.tatango.com/api/v2/lists/<ID>/messages/scheduled" -d '{"start_date":"20160901", "end_date":"20161030"}' -X GET \
    -H "Accept: application/json" \
    -H "Content-Type: application/json" \
    -u emailaddress@mydomain.com:my_api_key \
    -H "Host: example.org" \
    -H "Cookie: "

{
  "status": "OK",
  "per_page": 10,
  "count": 2,
  "page": 1,
  "pages_count": 1,
  "messages": [
    {
      "id": 14523,
      "content": "AMCE Retail: Save $20 off this weekend when you spend more than $100 in-store. Show this text message to redeem. Reply STOP to end.",
      "sent_at": "2016-09-07T14:10:53-07:00",
      "status": "scheduled",
      "name": "my message name",
      "is_broadcast": false,
      "recipient_count": 0,
      "success_count": 0,
      "bounces_count": 0,
      "pending_count": 0,
      "clean_count": 0,
      "unsubscribe_count": 0,
      "sms_count": 0,
      "mms_count": 0,
      "rcs_count": 0,
      "send_cost": 0,
      "attachment": "https://url-to-your-mms-attachment"
    }
  ]
}