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Fix SharePoint Emails Showing Generic Sender Instead of Site Name

Olivia Miller Oct 9, 2026 868 views

Question details

The user needs to identify or restore the original site name in SharePoint notification emails instead of seeing a generic 'SharePoint Online' sender.

How to Fix SharePoint Emails Showing Generic Sender Instead of Site Name

Product: Microsoft SharePoint Online
Device & OS: not provided
Scenario: Receiving automated library notifications or emails generated by SharePoint 2013 workflows.
Observed behavior: Notification emails display 'SharePoint Online' as the sender instead of the originating site name, making it difficult to identify the related site or workflow.

Before you start

Verify whether this generic sender behavior affects standard automated library notifications, custom SharePoint 2013 workflow emails, or both across your Microsoft 365 tenant.

Solution 1Recommended

Create a Microsoft 365 Support Request

Because this sender display behavior is often linked to backend Microsoft anti-spam updates, creating a support ticket is the most effective way to request an investigation and potential fix.

Microsoft recently updated default sender addresses for SharePoint notifications to reduce the likelihood of no-reply messages being classified as spam. This system-level change often overrides the specific site name.

Since administrators cannot manually change the default SharePoint email prefix, a backend investigation by the development team is required.

Open the Microsoft 365 Admin Center

Navigate to Help & Support

Click on 'Show all' in the left navigation menu, select 'Support', and then click on 'Help & support'.

Submit a New Service Request

Describe the issue in detail, specifying whether it affects library notifications or SharePoint 2013 workflows. Attach sample email files (.msg) and provide HAR logs if the support engineer requests network trace data.

Prepare Information: Gathering examples of the affected emails and the exact URLs of the originating SharePoint sites beforehand will speed up the support process.

Solution 2

Check Microsoft Service Health and Documentation

Review ongoing service updates to understand recent changes to SharePoint email addresses and determine if there is an active incident.

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Frequently Asked Questions

Why does SharePoint Online replace my site name in notification emails?

Microsoft recently updated the default sender address and display behavior for SharePoint notifications to prevent automated, no-reply messages from being incorrectly classified as spam by enterprise and external email clients.

Can I manually change the SharePoint email prefix to fix the sender name?

No, you cannot manually alter the default SharePoint email prefix. It is enforced by Microsoft's backend to ensure proper email routing, security, and deliverability.

What is a HAR log and why does Microsoft Support request it for email issues?

A HAR (HTTP Archive) log records the web browser's interaction with the server. Microsoft Support may request this trace data to identify exactly where the generic sender name is being injected when a workflow or alert triggers the email.

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