---
title: "Set display name and signature, applied to every outgoing message"
method: PUT
path: "/v1/domains/{domain}/mailboxes/{localPart}/identity"
tags: ["Identity"]
---

# Set display name and signature, applied to every outgoing message

`PUT /v1/domains/{domain}/mailboxes/{localPart}/identity`

## Request

- Base URL: `https://api.usemektup.com`
- URL: `https://api.usemektup.com/v1/domains/{domain}/mailboxes/{localPart}/identity`
- Auth: HTTP bearer

## Path parameters

- `domain` string, required
- `localPart` string, required

## Request body

- object
  - `displayName` string, nullable
  - `signatureText` string, nullable
  - `signatureHtml` string, nullable

## Response `204`

Updated

## Other responses

- `404`: Not found on this account (tenant-isolated - never reveals another account's data)

---

[API](https://skmtc.dev/usemektup/apis/mektup-api.md) · [All operations](https://skmtc.dev/usemektup/apis/mektup-api/llms.txt) · [OpenAPI document](https://skmtc.dev/usemektup/apis/mektup-api/revisions/b64e649247e7?raw)