curl -X PATCH "https://app.emailx.ai/api/v1/workspaces/123/campaigns/email/456/messages/101" \
  -H "Authorization: Bearer $EMAILX_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: example-operation-001" \
  --data '{"preview_id":301,"expected_revision":"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","subject":"A reviewed subject"}'

import os, requests

response = requests.patch(
    "https://app.emailx.ai/api/v1/workspaces/123/campaigns/email/456/messages/101",
    headers={"Authorization": "Bearer " + os.environ["EMAILX_API_KEY"], "Idempotency-Key": "example-operation-001"},
    json={'preview_id': 301, 'expected_revision': 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa', 'subject': 'A reviewed subject'},
    timeout=30,
)
response.raise_for_status()
print(response.json())

const response = await fetch("https://app.emailx.ai/api/v1/workspaces/123/campaigns/email/456/messages/101", {
  method: "PATCH",
  headers: { Authorization: `Bearer ${process.env.EMAILX_API_KEY}`, "Content-Type": "application/json", "Idempotency-Key": "example-operation-001" },
  body: JSON.stringify({"preview_id": 301, "expected_revision": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "subject": "A reviewed subject"}),
  signal: AbortSignal.timeout(30000),
});
if (!response.ok) throw new Error(`Emailx: ${response.status}`);
console.log(await response.json());

{
  "data": {
    "workspace_id": 123,
    "campaign_id": 456,
    "task_id": 101,
    "workflow_email_id": 1001,
    "contact_id": 789,
    "preview_id": 301,
    "recipient_email": "alex@example.com",
    "sender_email": "sender@example.com",
    "sender_id": 903,
    "status": "preview_ready",
    "subject": "A reviewed subject",
    "body_text": "Hello Alex",
    "body_html": "<p>Hello Alex</p>",
    "preheader": "A brief introduction",
    "revision": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
    "delivery_verified": false
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "details": {}
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "details": {}
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "details": {}
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "details": {}
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "details": {}
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "details": {}
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "details": {}
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "details": {}
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "details": {}
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "request_id": "<string>",
    "details": {}
  }
}