Update office-365-ti.md - Listed perms required to View Preview of emails

I couldn't easily find this within the documentation, but based on testing over a few tenants, it seems GA can view/read only quarantined emails. Access to all emails  requires the read/preview perm. There may be other roles that have this -Exchange Admin might be able to. 

Think this would be good to have clearly stated somewhere.

Author: Yebbenbe

defender-office-365/office-365-ti.md

@@ -106,6 +106,8 @@ Microsoft Defender for Office 365 uses role-based access control. Permissions ar
 |View Incidents (also referred to as Investigations) <br/><br/> Add email messages to an incident|One of the following: <ul><li>**Global Administrator**<sup>\*</sup></li><li>**Security Administrator**</li><li>**Security Reader**</li></ul> <br/> These roles can be assigned in either Microsoft Entra ID (<https://portal.azure.com>) or the Microsoft 365 admin center (<https://admin.microsoft.com>).|
 |Trigger email actions in an incident <br/><br/> Find and delete suspicious email messages|One of the following: <ul><li>**Global Administrator**<sup>\*</sup></li><li>**Security Administrator** plus the **Search and Purge** role</li></ul> <br/> The **Global Administrator**<sup>\*</sup> and **Security Administrator** roles can be assigned in either Microsoft Entra ID (<https://portal.azure.com>) or the Microsoft 365 admin center (<https://admin.microsoft.com>). <br/><br/> The **Search and Purge** role must be assigned in the **Email & collaboration roles** in the Microsoft 36 Defender portal (<https://security.microsoft.com>).|
 |Integrate Microsoft Defender for Office 365 Plan 2 with Microsoft Defender for Endpoint <br/><br/> Integrate Microsoft Defender for Office 365 Plan 2 with a SIEM server|Either the **Global Administrator**<sup>\*</sup> or the **Security Administrator** role assigned in either Microsoft Entra ID (<https://portal.azure.com>) or the Microsoft 365 admin center (<https://admin.microsoft.com>). <br/><br/> --- **plus** --- <br/><br/> An appropriate role assigned in additional applications (such as [Microsoft Defender Security Center](/windows/security/threat-protection/microsoft-defender-atp/user-roles) or your SIEM server).|
+|View email preview/download .eml of Quarantined emails (view/download only Quarantined emails)|One of the following: <ul><li>**Global Administrator**<sup>\*</sup></li><li>**Security Administrator**</li><li>**Security Reader**</li></ul> <br/> These roles can be assigned in either Microsoft Entra ID (<https://portal.azure.com>) or the Microsoft 365 admin center (<https://admin.microsoft.com>).|
+|View email preview/download .eml of ANY email in Explorer|One of the following: <ul><li>**Security Administrator**</li><li>**Security Reader**</li></ul> <br/> These roles can be assigned in either Microsoft Entra ID (<https://portal.azure.com>) or the Microsoft 365 admin center (<https://admin.microsoft.com>).|
 
 > [!IMPORTANT]
 > <sup>\*</sup> Microsoft recommends that you use roles with the fewest permissions. Using lower permissioned accounts helps improve security for your organization. Global Administrator is a highly privileged role that should be limited to emergency scenarios when you can't use an existing role.