Inboxes are currently in private beta and only available to a limited
number of users. The response shape might change before GA.Get early access if you’re interested in testing this feature.Once you have access, upgrade your Resend SDK to use the new methods:
npm install resend@6.28.1-preview-inboxes.2
npm install -g resend-cli@2.22.0-preview-inboxes.2
inbox.email.sent follows once the email is accepted for delivery.
{
"type": "inbox.draft.sent",
"created_at": "2026-09-29T12:00:00.000Z",
"data": {
"source": "api",
"inbox_id": "b3e2b2b6-3f0e-4c8e-9ad3-2f43a1e2c7f1",
"thread_id": "7c1f0a2e-5d3b-4e8a-9f61-2b8d4c6e1a90",
"email_id": "81ce9b8d-1b0a-4d02-a4d9-2a91f5ab6397",
"draft_id": "9a2b7c4d-1e3f-4a5b-8c6d-0e1f2a3b4c5d",
"thread": {
"object": "inbox_thread",
"id": "7c1f0a2e-5d3b-4e8a-9f61-2b8d4c6e1a90",
"subject": "Question about my invoice",
"folder": "inbox",
"labels": [],
"read": true
},
"draft": {
"object": "inbox_draft",
"id": "9a2b7c4d-1e3f-4a5b-8c6d-0e1f2a3b4c5d",
"type": "reply",
"to": ["steve.wozniak@gmail.com"],
"cc": [],
"bcc": [],
"subject": "Re: Question about my invoice",
"thread_id": "7c1f0a2e-5d3b-4e8a-9f61-2b8d4c6e1a90",
"reply_to_email_id": "4ef9a417-02e9-4d39-ad75-9611e0fcc33c",
"email_id": "81ce9b8d-1b0a-4d02-a4d9-2a91f5ab6397",
"created_at": "2026-09-29T11:58:00.000Z",
"updated_at": "2026-09-29T12:00:00.000Z"
}
}
}