curl --request GET \
  --url https://api.openmail.sh/v1/inboxes \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": "<string>",
      "address": "jsmith@example.com",
      "externalId": "<string>",
      "createdAt": "2023-11-07T05:31:56Z"
    }
  ],
  "total": 123
}