---
title: "Outlook Add-in"
description: "Install and roll out the meinGPT Outlook add-in for users and Microsoft 365 admins"
canonical_url: "https://meingpt.com/en/docs/integrations/connectors/outlook-addin"
language: en
---

# Outlook Add-in

# Install and Set Up meinGPT for Outlook

This guide explains step by step how to install and set up the **meinGPT** Outlook add-in. The add-in brings the **meinGPT platform** directly into Outlook so you can summarize email threads, ask follow-up questions, and draft replies.

## Add-in or Microsoft 365 connector? What's the difference?

| | Outlook Add-in | Microsoft 365 connector |
|---|---|---|
| Where it runs | Directly inside Outlook (web/desktop) as an add-in | In meinGPT, as a tool for chats/assistants |
| What it does | Shows meinGPT in the Outlook side panel, e.g. for quickly summarizing an open email | Reads/writes emails, calendar, contacts via Microsoft Graph, usable in any chat or assistant |
| Setup | Installed via the Microsoft Store / AppSource | OAuth connection via the connector settings |

The two can be used independently — the add-in doesn't replace the connector, and vice versa.

## Requirements

- Supported versions: Outlook on the web, Outlook for Windows (classic and new), and Outlook for Mac
- Your organization may allow or restrict add-ins. If an option is missing, check with your IT team or a Microsoft 365 admin.
- A meinGPT API key is required to sign in to the add-in. The API is an Enterprise feature and must be enabled for your organization – if it isn't, the **meinGPT API** menu entry under **Account** won't be there; in that case contact [enterprise@meingpt.com](mailto:enterprise@meingpt.com) or a workspace admin.

## Installation for end users

### From the store (AppSource / "Get Add-ins")

> Note: Depending on the Microsoft Store or Outlook language, the add-in may appear as **meinGPT** or **myGPT**. If one name does not show up in search, try the other variant as well.

#### Outlook on the web and new Outlook for Windows

1. Open Outlook.
2. In the top bar, go to **More Apps** and then **Get Add-ins**.
3. Search for **meinGPT**.
4. Open the add-in and select **Add**.
5. Optional: In the message view, open **More Apps** and pin **meinGPT** to the toolbar for faster access.

#### Outlook for Windows (classic)

1. Open **File -> Manage Add-ins**. This opens add-in management in the browser.
2. Open the **Store / AppSource**.
3. Search for **meinGPT** and select **Add**.

#### Outlook for Mac

1. Open **Tools -> Get Add-ins**.
2. Search for **meinGPT**.
3. Select **Add**.

> Note: After installation, **meinGPT** appears in the read or compose surface under **Apps / More Apps** or as its own ribbon icon. Use **Pin** to keep it visible.

## Organization-wide rollout for admins

Microsoft 365 admins can deploy the add-in centrally:

1. Open the **Microsoft 365 Admin Center**.
2. Go to **Settings -> Integrated apps -> Add-ins**.
3. Select **Deploy Add-in**.
4. Choose **AppSource** as the source and search for **meinGPT**.
5. Assign the add-in to all users, specific groups, or selected users.
6. Review the configuration and complete the deployment.

After that, the add-in appears automatically in the Outlook clients of the assigned users.

## First sign-in and usage

1. Create an API key in meinGPT: from the user menu in the lower-left corner, open **Profile Settings** and select **meinGPT API** under **Account**.
2. Select an email. The add-in only works when a message is selected.
3. Select **Open chat**. The very first time you open it, the add-in shows its own API key field – paste the key you created in step 1 there and confirm with **Save & Continue**.

### Updating the API key later

If the key is reset or recreated in meinGPT, the add-in does **not** pick that up automatically – the old key stays stored locally. In the add-in, open the settings icon at the top and select **Logout** to clear the stored key. The add-in then shows the entry screen from step 3 again, where you paste the new key.

## Troubleshooting

### The add-in does not appear or cannot be opened

- Restart Outlook and make sure all Outlook windows are fully closed first.
- Check whether the add-in is enabled under **Manage Add-ins**.
- On company-managed devices, confirm with IT whether policies or restrictions are blocking the add-in.

### The add-in keeps getting disabled

- Open **File -> Options -> Add-ins**.
- Under **Manage**, choose **COM Add-ins** and then **Go...**.
- Enable the checkbox for the add-in and confirm with **OK**.
- If Outlook offers it, select **Always enable**.

### Error message when opening chat or sending a message (e.g. "... failed with status ...")

- First check whether the currently valid API key is actually stored in the add-in: open the settings icon in the add-in -> **Logout**, then paste the key again. A key that was reset or recreated in meinGPT is not picked up by the add-in automatically.
- Check under **Account -> meinGPT API** in meinGPT that the key still exists and wasn't deleted in the meantime.
- Note the exact error message and status code shown in the add-in (e.g. "status 401", "status 402") – this helps support narrow down the cause. 401 points to a wrong or missing key, 402 to an exhausted credit balance (see [Credits system](/en/docs/platform/credits)); forward other codes to support.

## Privacy and security

- Access: The add-in only accesses the current message when you actively open it or trigger an action.
- Transmission: Content is only sent to **meinGPT** when you start a meinGPT action, such as a summary or reply draft.
- Privacy: As usual, processing with the AI models remains GDPR-compliant.