curl --request GET \
  --url https://api-v2.missioninbox.com/domain/{id}/

{
  "id": 123,
  "name": "<string>",
  "mailboxes": 123,
  "sent_emails": 123,
  "status": true,
  "redirect": "<string>",
  "project_id": 123,
  "relay_server_id": 123
}