create-reply-all-draft
create-reply-all-draftCreate a draft that replies to the sender and all recipients of a message, output as JSON or MIME format.
Instructions
Create a draft to reply to the sender and all recipients of a message in either JSON or MIME format. When using JSON format:
Specify either a comment or the body property of the message parameter. Specifying both will return an HTTP 400 Bad Request error.
If the original message specifies a recipient in the replyTo property, per Internet Message Format (RFC 2822), you should send the reply to the recipients in the replyTo and toRecipients properties, and not the recipients in the from and toRecipients properties.
You can update the draft later to add reply content to the body or change other message properties. When using MIME format:
Provide the applicable Internet message headers and the MIME content, all encoded in base64 format in the request body.
Add any attachments and S/MIME properties to the MIME content. Send the draft message in a subsequent operation. Alternatively, reply-all to a message in a single action.
š” TIP: For HTML replies pass Message.body.contentType: 'html' with Message.body.content as HTML. Note: supplying Message.body replaces the whole draft body, so the original quoted history is not included. Specifying both 'comment' and Message.body returns 400. Signatures are added by the Outlook client only, not via Graph.
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| body | Yes | ||
| confirm | No | For destructive operations when the confirm gate is enabled (MS365_MCP_REQUIRE_CONFIRM=true; off by default). Set to true only after the user has explicitly approved this action. When the gate is on, calls without confirm: true return { error: "confirmation_required" } without touching user data. | |
| messageId | Yes | Value for the 'messageId' path segment. Pass it under the name 'messageId', not as 'id'. Use the 'id' field of the message object as returned by Microsoft Graph. | |
| includeHeaders | No | Include response headers (including ETag) in the response metadata | |
| excludeResponse | No | Exclude the full response body and only return success or failure indication |