Sending, receiving, and organizing email in Outlook.com
Hi E,
None of us here I am afraid, work for Microsoft, so we do not have an idea :(
Microsoft shared the following update:
Via https://x.com/MSFT365Status/status/2121079061774491735
We’ve monitored the status of the changes applied to improve serviceability and confirmed they're not taking as expected. We’re identifying alternate workstreams that can be applied to increase capacity in the face of sustained traffic management imbalances. More info under EX1550543 and MO1550821 in the Microsoft 365 admin center, as well as https://msft.it/6013xBHsf if the admin center is not available to you.
I hope this information helps. If you have any more questions, don't hesitate to reach out. Wishing you good luck!