---
title: "Build a reply skeleton"
method: POST
path: "/inbound/{id}/draft-reply"
tags: ["Inbound emails"]
---

# Build a reply skeleton

`POST /inbound/{id}/draft-reply`

## Request

- Base URL: `https://api.poststack.dev`
- URL: `https://api.poststack.dev/inbound/{id}/draft-reply`
- Auth: one of:
  - HTTP bearer
  - OAuth 2
    - Authorization code: `https://poststack.dev/oauth/authorize`
    - Token URL: `https://poststack.dev/oauth/token`
- TypeScript: <https://skmtc.dev/poststack/apis/poststack-api/docs/inbound/:id/draft-reply/post.ts> (a function with typed inputs; its response is checked against the schema)

Suggested from/subject, threading headers and quoted original. Sends nothing.

## Path parameters

- `id` integer, required

## Request body

- DraftReplyInput
  - `tone` 'formal' | 'friendly' | 'casual'

## Response `200`

Draft.

- InboundReplyDraft
  - `inbound` object
    - `id` integer
    - `from` string
    - `to` string
    - `subject` string, nullable
    - `received_at` string
  - `suggested_from` string
  - `suggested_subject` string
  - `salutation` string
  - `body_placeholder` string
  - `quoted_html` string
  - `quoted_text` string
  - `threading` object
    - `in_reply_to` string, nullable
    - `references` string, nullable
  - `suggested_html` string
  - `suggested_text` string
  - `signs_automatically` boolean

## Other responses

- `400`: Validation failed — `error` names each offending field (`field: message`).
- `401`: Missing, malformed or unknown credentials (`WWW-Authenticate: Bearer …` is set).
- `403`: The credential lacks the `mailboxes:manage` scope (body `{ error: "insufficient_scope", required, missing }`), or the team is suspended.
- `404`: No such resource on this team.
- `429`: Rate limited (60/min). `Retry-After` gives the seconds to wait; `X-RateLimit-*` headers are sent on every response.

## Changes

- **2026-09-30** `4dc1e20989c8`: 15 warning
  - added the new `daily_limit_exceeded` enum value to the `anyOf[#/components/schemas/Error]/code` response property for the response status `403`
  - added the new `daily_limit_exceeded` enum value to the `code` response property for the response status `400`
  - added the new `daily_limit_exceeded` enum value to the `code` response property for the response status `401`
  - added the new `daily_limit_exceeded` enum value to the `code` response property for the response status `404`
  - …11 more
- **2026-09-29** `ef5b22b98333`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/poststack/apis/poststack-api/changes/inbound/:id/draft-reply/post.md)

---

[API](https://skmtc.dev/poststack/apis/poststack-api.md) - [All operations](https://skmtc.dev/poststack/apis/poststack-api/llms.txt) - [OpenAPI document](https://skmtc.dev/poststack/apis/poststack-api/revisions/0d3971e3a670?raw)