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How to Fix Microsoft Bookings Emails Not Being Delivered
Question details
Microsoft Bookings notifications and emails are failing to reach a specified or redirected email group.
- Product
- Microsoft Bookings / Microsoft 365
- Device & OS
- not provided
- Scenario
- Routing automated booking confirmations and notifications to a centralized Microsoft 365 email group.
- Observed behavior
- Emails generated by Microsoft Bookings stop being delivered to the target group due to delivery restrictions, insufficient permissions, or temporary service issues.
Ensure you have administrator access to the Microsoft 365 admin center, as troubleshooting group delivery restrictions and running message traces require elevated privileges.
Verify Group Permissions and Delivery Restrictions
Ensure the receiving email group is correctly configured to accept automated messages from Microsoft Bookings or external senders.
Often, email groups are restricted by default to only accept messages from internal users. Because Microsoft Bookings can act as an external or system sender depending on the configuration, you must update the group's delivery management settings.
Access the Microsoft 365 admin center using your administrator credentials.
Go to 'Teams & groups' in the left-hand navigation pane and select 'Active teams and groups'.
Search for and click on the specific email group that is supposed to receive the Bookings notifications.
Open the 'Settings' or 'Mail' tab for the group and ensure that the option allowing external senders to email the group is enabled.
Perform a Message Trace in Exchange Admin Center
Use the message trace tool to determine exactly where the Microsoft Bookings email is being blocked or dropped.
Consult the Microsoft Bookings Community
Reach out to specialists if the issue stems from a temporary service outage or a deeper backend configuration problem.
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Frequently Asked Questions
Why are my Microsoft Bookings emails suddenly not being delivered to my group?
This commonly happens due to a recent configuration change in Microsoft 365, such as updated group delivery restrictions that block external senders, or a temporary backend service outage affecting the Bookings service.
How do I allow external senders to email a Microsoft 365 group?
In the Microsoft 365 admin center, go to 'Teams & groups', select your specific group, open the 'Settings' tab, and check the box that allows external senders to email the group.
Can I change the sender address for Microsoft Bookings notifications?
Microsoft Bookings sends emails from a specific system-generated email address tied to your booking calendar. While you can customize the display name, you cannot change the underlying sending domain, which is why your receiving groups must be configured to allow emails from it.
What is a message trace in Microsoft 365?
A message trace is a diagnostic tool found in the Exchange Admin Center. It tracks emails as they travel through your Exchange Online organization, helping administrators determine if a message was successfully delivered, rejected, or deferred.
