curl --request POST \
  --url https://api.decodahealth.com/email/threads/{thread_id}/reply \
  --header 'API-KEY: <api-key>' \
  --header 'Content-Type: application/json' \
  --header 'TENANT: <tenant>' \
  --data '
{
  "bodyHtml": "<string>",
  "bodyText": "<string>",
  "toOverride": [
    "<string>"
  ]
}
'

{
  "success": true,
  "messageId": "<string>",
  "threadId": "<string>",
  "error": "<string>"
}