Retirement starts on October 26

The stamp at the top of this IT Home page is 2026/10/24 13:07:40. It relays a Windows Central post from October 23: Microsoft has said it will start on October 26, 2026, retiring Prioritize My Inbox in Outlook. A later passage completes the calendar. Retirement starts that day, the feature comes down in stages, and it is expected to be fully removed from all Outlook clients by the end of March 2027. October 26 is the start. The end of March 2027 is the expected full removal. The two dates should not be collapsed into one day.

The feature lines up with 2025. It launched in 2025 and mainly calls Copilot to help people find mail that needs attention inside a large inbox. Early on, Microsoft called it an email revolution. That was the label at launch, not a measured result on this page. Matthew Marzynski, then principal product manager in Microsoft's digital organization, compared it to a personal assistant that filters and surfaces what it treats as the most useful information. The page also says people could use filters and custom prompts to tell Copilot which kinds of mail mattered more, with examples such as customer replies, meetings, approvals, and a given project. That is one sentence on scope. It is not a prompt recipe.

The reason for removal is short. The company did not explain in detail. It said only that removing the feature helps simplify the overall Outlook Copilot experience. There is no second explanation, and no usage figure or accuracy figure. For people who still want help sorting mail, the page says Focused Inbox and other older methods remain available. Focused Inbox stays. What is being retired is Prioritize My Inbox. The two features should not be treated as one.

Related items at the bottom, covering a button repair, spell check, attachment blocking, and a search fault, are not the decision this page is reporting and are not folded in. Windows Central is the outlet this page names. Between the start of retirement and full removal, the page also says the feature comes down in stages. Those stages are not split into a date for each Outlook client. This piece keeps the two retirement dates, the 2025 launch, Copilot sorting, the old label, the product manager's comparison, the lack of a detailed reason, and the fact that Focused Inbox remains.