curl --request GET \
  --url https://www.getinboxzero.com/api/v1/reply-tracker \
  --header 'API-Key: <api-key>'

{
  "emails": [
    {
      "threadId": "<string>",
      "subject": "<string>",
      "from": "<string>",
      "date": "<string>",
      "snippet": "<string>"
    }
  ],
  "count": 123
}