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How to Customize Microsoft 365 Encrypted Email Notifications with Branding
Question details
An organization wants to configure administrative-level settings to add company branding and a custom logo to Microsoft 365 encrypted email notifications sent to recipients.
- Product
- Microsoft 365
- Device & OS
- not provided
- Scenario
- An enterprise with an Office 365 E3 license needs to apply consistent corporate branding to secure, encrypted messages sent outside or inside the organization.
- Observed behavior
- The user is seeking the correct administrative channels or PowerShell commands to implement customized branding on Microsoft Purview encrypted email notifications.
Ensure you are signed in as a Microsoft 365 Global Administrator or Exchange Administrator and verify that your organization has an active Office 365 Enterprise E3 or E5 license that supports Microsoft Purview advanced features.
Request Configuration via Microsoft 365 Admin Center
The safest and most reliable method to verify licensing and apply organization-specific branding is by working directly with Microsoft Support.
Microsoft Purview branding features depend heavily on your tenant's specific licensing and configuration. Because forum support for these advanced settings may be read-only or limited, opening an official service request ensures you get an engineer assigned to your specific tenant.
Navigate to the Microsoft 365 admin center and log in using your Global Administrator credentials.
Click on the 'Help & support' icon typically located in the bottom right corner of the screen.
Type 'Customize Purview encrypted email branding' in the search bar, review the suggested articles, and then click 'Contact support' to open a new ticket.
Provide your Office 365 Enterprise E3 license details and branding assets to the assigned engineer to finalize the configuration.
Apply Branding using Exchange Online PowerShell
Administrators can utilize PowerShell cmdlets to manually customize Office 365 Message Encryption (OME) settings, including adding a company logo.
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- 1. Download the Installer: Visit the official WPS Office website and click the download button for your operating system.
- 2. Install the Software: Run the downloaded installer and follow the simple on-screen instructions to set up the suite.
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Frequently Asked Questions
What licenses support custom branding for Microsoft 365 encrypted emails?
Custom branding for Office 365 Message Encryption (OME) typically requires an Office 365 Enterprise E3, E5, or equivalent Microsoft 365 enterprise subscription.
Can end-users customize the branding of their own encrypted emails?
No. Customizing encrypted email notifications is an organization-wide setting. It must be configured globally by a Microsoft 365 Global Administrator or an Exchange Administrator.
What is the maximum file size for a custom branding logo in Microsoft Purview?
When uploading a custom logo via the Set-OMEConfiguration cmdlet, the image file must typically be less than 40 KB and formatted as a JPG, PNG, or TIFF file. Always check the latest Microsoft documentation for exact specifications.
