# Ensure MailTips are enabled for end users

Ensure MailTips are enabled for end users. A Maester check for Exchange Online, Outlook.

Source: https://maester.dev/docs/tests/MT.1039

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<div class="test-byline"><div class="test-byline-avatars"><a class="test-byline-avatar test-byline-avatar--author" href="/contributors/weycc81" title="Stefan Wey · Original author"><img src="https://github.com/weyCC81.png" alt="Stefan Wey" width="28" height="28" loading="lazy" decoding="async" /></a><a class="test-byline-avatar" href="/contributors/bastienperez" title="Bastien Perez · Co-contributor"><img src="https://github.com/bastienperez.png" alt="Bastien Perez" width="28" height="28" loading="lazy" decoding="async" /></a></div><div class="test-byline-meta"><span class="test-byline-text">Contributed by <a href="/contributors/weycc81">Stefan Wey</a> with <a href="/contributors/bastienperez">Bastien Perez</a></span><a class="test-byline-link" href="/contributors">All contributors →</a></div></div>

<p class="test-part">Part of <a href="/docs/tests/maester">Maester</a> · Exchange Online · Outlook · <a href="/docs/tests">All checks</a></p>

```powershell title="Run this check"
Invoke-Maester -TestId MT.1039
```

## Overview

MailTips SHOULD be enabled for end users

Rationale: MailTips assist end users with identifying strange patterns in emails they send, helping prevent accidental data leakage and improving overall email security awareness.

#### Remediation action

1. Connect to Exchange Online:

```powershell
Connect-ExchangeOnline
```

1. Enable MailTips for external recipients:

```powershell
Set-OrganizationConfig -MailTipsExternalRecipientsTipsEnabled $true
```

1. Verify the setting:

```powershell
(Get-OrganizationConfig).MailTipsExternalRecipientsTipsEnabled
```

The result should be `True`.

#### Related links

* [MailTips in Exchange Online](https://learn.microsoft.com/exchange/clients-and-mobile-in-exchange-online/mailtips/mailtips)
* [Microsoft Secure Score - Enable MailTips](https://security.microsoft.com/securescore)

## Details

<details>
<summary>Every attribute of this check</summary>

| Field | Value |
| --- | --- |
| Test ID | MT.1039 |
| Severity | Low |
| Suite | Maester |
| Product | Exchange Online |
| Feature | Outlook |
| Area | Email and collaboration protection |
| Resource type | Tenant |
| User impact | Low |
| Implementation cost | Low |
| MITRE ATT&CK | None |
| PowerShell test | [Test-MtExoMailTip](https://github.com/maester365/maester/blob/main/tests/maester/exchange/Test.MT.1039.ps1) |
| Services | ExchangeOnline |

</details>

## Source

- Test: [`tests/maester/exchange/Test.MT.1039.ps1`](https://github.com/maester365/maester/blob/main/tests/maester/exchange/Test.MT.1039.ps1)
- Documentation: [`tests/maester/exchange/Test.MT.1039.md`](https://github.com/maester365/maester/blob/main/tests/maester/exchange/Test.MT.1039.md)