Add attachment

addAttachment attaches a file directly to an unsent Outlook draft.

automations/add-outlook-attachment.automation.ts

import { automation } from "automate.ax"
import { addAttachment, draftEmail } from "automate.ax/outlook"

export default automation("Attach Outlook report", () => {
  const draft = draftEmail({
    to: "reader@example.com",
    subject: "Report",
    body: "Attached.",
  })
  addAttachment({
    messageId: draft.messageId,
    file: new File(["report"], "report.txt", { type: "text/plain" }),
  })
})

messageId and file: File are required. Optional inline defaults to false; contentId identifies an inline file referenced by HTML. Optional account selects the binding. The file must be no larger than 3,000,000 bytes. Larger Outlook attachments require an upload-session flow that this action does not expose. Returns the created normalized attachment, including its new attachmentId and decoded file data when Graph echoes it.

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