Microsoft to retire Prioritize My Inbox in Outlook by March 2027
The Copilot-powered email sorting feature will be removed from all Outlook clients starting October 26, 2026, Microsoft says.
Microsoft will retire the Copilot-powered Prioritize My Inbox feature in Outlook, removing it from all Outlook clients, according to Windows Central. The process begins on October 26, 2026, and will be completed by the end of March 2027.
The company announced the change through the Microsoft 365 Message Center and described the rollback as a cleanup effort aimed at creating a simpler Outlook Copilot experience. Microsoft gave little explanation beyond that stated goal.
The removal will not happen at once: the rollback continues gradually over the following months until it wraps up at the end of March 2027.
Unveiled as a personal-assistant feature
Microsoft first unveiled Prioritize My Inbox last year, presenting it as a Copilot feature that surfaces priority emails based on user behavior. At the time, Matthew Marzynski of Microsoft Digital likened the feature to having a personal assistant, while Mark Stratford, a senior product manager at Microsoft, said it revolutionizes email.
With the retirement, Outlook users will lose that behavior-based sorting from their inbox, though Microsoft has not detailed what, if anything, will replace it.
Quick answers
When will Prioritize My Inbox be removed from Outlook?
The retirement begins on October 26, 2026, and the rollback will be complete by the end of March 2027.
Why is Microsoft removing Prioritize My Inbox?
Microsoft described the rollback as a cleanup effort to create a simpler Outlook Copilot experience, with little explanation beyond that.
Where did Microsoft announce the change?
The company announced it through the Microsoft 365 Message Center.