Campaigns

Unschedule a campaign

Cancels a scheduled send, returning the campaign to draft. Also clears a delivery time staged on a draft in the web editor, so the draft can then be sent with the send endpoint. The campaign must be scheduled, or a draft with a staged delivery time. Requires the campaigns:write scope. Not available to sandbox keys.

post/campaigns/{campaignId}/unschedule

Request

Base URL: https://app.lettr.com/api
URL: https://app.lettr.com/api/campaigns/{campaignId}/unschedule
Auth: HTTP bearer

Path parameters

campaignIdstring uuid required

Campaign ID

Response

Campaign unscheduled.

messagestring required

Example response

{
  "message": "Campaign scheduled for delivery.",
  "data": {
    "id": "0193e6a8-1f3a-7c2a-b9e2-1aa1d2e5d3f0",
    "name": "Spring Sale",
    "status": "sent",
    "sent_count": 124,
    "created_at": "2026-05-01T09:00:00+00:00"
  }
}

Changes

No recorded changes to this operation across all 1 revision of this API.