curl --request POST \
  --url https://api.migma.ai/v1/emails/previews \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "html": "<string>",
  "subject": "Email Preview",
  "devices": [
    "<string>"
  ],
  "name": "<string>"
}
'

{
  "success": true,
  "data": {
    "previewId": "<string>",
    "status": "processing",
    "name": "<string>",
    "subject": "<string>",
    "devices": [
      "<string>"
    ],
    "metadata": {
      "requestedDevices": 123,
      "completedDevices": 123,
      "failedDevices": 123,
      "estimatedCompletionTime": 123
    }
  }
}