---
title: "Lookup Message Send"
method: GET
path: "/api/v1/message-sends/lookup"
tags: ["Message Sends"]
---

# Lookup Message Send

`GET /api/v1/message-sends/lookup`

## Query parameters

- `sender_kind` 'mailbox' | 'phone_number' | 'imessage_identity', required
- `sender_id` string, uuid, required
- `operation` 'mail.send' | 'mail.reply' | 'mail.reply_all' | 'mail.forward' | 'text.send' | 'imessage.send', required

## Headers

- `Idempotency-Key` string, required

## Response `200`

Successful Response

- MessageSendLookup
  - `message_id` string, uuid, required

## Other responses

- `422` — Validation Error
- `4XX` — Client error with Support Agent information.
- `5XX` — Server error with Support Agent information.

## Changes

- **2026-09-30** `8583fbe88b90` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/inkbox/apis/inkbox-api/changes/api/v1/message-sends/lookup/get.md)

---

[API](https://skmtc.dev/inkbox/apis/inkbox-api.md) · [All operations](https://skmtc.dev/inkbox/apis/inkbox-api/llms.txt) · [OpenAPI document](https://skmtc.dev/inkbox/apis/inkbox-api/revisions/5cbaa42f14f7?raw)