---
title: "Using the Opensense Outlook Add-in on iOS"
slug: "how-to-access-opensense-outlook-add-in-on-ios"
description: "Open the Opensense Outlook Add-in in Outlook for iOS from an existing email, switch between your signatures, and update the fields your admin unlocked."
updated: 2026-07-22T17:38:47.000Z
canonical: "https://help.opensense.com/docs/how-to-access-opensense-outlook-add-in-on-ios"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.opensense.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Using the Opensense Outlook Add-in on iOS

## Overview

On iOS, you open the Opensense Outlook add-in from an existing email. From there, you can switch between your signatures and update your settings on the go.

:::note[Not in the compose window]
Unlike on desktop, the Opensense add-in isn't available in the iOS compose window. You must open an existing email to access it.
:::

## Before you start

You need:

- The Opensense Outlook add-in deployed to your account
- The Outlook app installed on your iPhone


## Open the add-in

1. Open any existing email in Outlook, and then tap the **three-dot menu** icon in the upper-right corner of the message header.

   <img src="https://help.opensense.com/media/image-1773417064455-e564effc9979.png" alt="An open email in Outlook for iOS, with the three-dot menu in the message header circled" width="400" height="367" loading="lazy" decoding="async">

2. In the options panel that appears, tap the **Opensense** icon.

   <img src="https://help.opensense.com/media/image-1773417098947-958c49533b77.png" alt="The options panel in Outlook for iOS, with the Opensense add-in icon highlighted next to Send to OneNote and More Add-Ins" width="340" height="446" loading="lazy" decoding="async">


## Switch your signature

Tap **Signatures**, and choose a different signature. This option appears if your organization has assigned multiple signatures to you.

Your choice applies the next time you compose an email.

<img src="https://help.opensense.com/media/image-1773417135891-a042110c843d.png" alt="The Signatures tab of the Opensense add-in on iOS, with the Choose Signature drop-down and a preview of the selected signature" width="360" height="408" loading="lazy" decoding="async">


## Update your settings

Tap **Settings** to edit any fields your organization has made available to you, and then tap **Update**. Fields that your admin has locked show a lock icon, and you can't edit them.

Your changes are saved, and apply to the next email you compose.

<img src="https://help.opensense.com/media/image-1773417187183-b562dd993d21.png" alt="The Settings tab of the Opensense add-in on iOS, with a Language drop-down, an unlocked name field, a locked title field, and an Update button" width="300" height="456" loading="lazy" decoding="async">

:::note[Selections stay on this device]
Custom compose field selections are device-specific. Checkboxes, drop-downs, and custom text fields are stored locally on each device, so selections you make on iOS don't carry over to desktop or Android. If you use Opensense on multiple devices, set your custom compose field preferences on each one separately.
:::


## What's next

- [Outlook Add-in overview](https://help.opensense.com/docs/outlook-add-in-overview-1)
- [Using the Opensense Outlook Add-in on Android](https://help.opensense.com/docs/how-to-access-opensense-outlook-add-in-on-android)
- [Setting up Custom Compose Fields for the Outlook Add-in](https://help.opensense.com/docs/custom-compose-fields)