Copilot Prioritize Is Retiring: What to Use Next

Copilot Prioritize, the Outlook feature also called Prioritize my inbox, is being retired. Microsoft starts removing it from every Outlook client on October 26, 2026 and expects to finish by the end of March 2027. Nothing replaces it directly, so the practical move is to save your priority instructions now, then rebuild the same behavior with Focused Inbox, Outlook rules created through Copilot chat, and a short daily triage prompt. If you want automatic AI sorting again, a separate tool such as Superhuman Mail, Fyxer or SaneBox can do it on a Microsoft 365 mailbox.

Below: what Prioritize did, the retirement dates, why the option may already be missing, and a plan to get a priority inbox back. Every detail was checked against Microsoft's support pages and its Message Center notice on October 25, 2026.

What Copilot Prioritize did

According to Microsoft's Prioritize my inbox help page, Copilot reviewed each email as it arrived and gave it a priority of high, normal or low. It looked at factors such as the people on the thread, their job titles and the content of the message, and it leaned toward marking mail that needed action from you as more important. Scoring ran alongside delivery, so mail was never delayed.

In practice that meant four visible changes:

• Priority arrows. High priority mail got an up arrow in the message list. A down arrow for low priority mail was available but switched off by default.
• Summary previews. The first line of each message in the list was replaced with a short summary.
• Reasons. When you opened a message, Copilot showed a few lines explaining why it thought the email mattered to you.
• Sort and filter. You could filter the inbox to show only high priority mail, or group it by high, normal and low.

You trained it with plain language instructions in Settings > Copilot > Prioritize, written as phrases such as "It's from my manager" or "It's about a customer complaint." Turning it on in one Outlook client turned it on everywhere, including the phone app.

It also had clear limits. Prioritize only scored new mail that landed in the Inbox, never older messages. It skipped mail routed to other folders by your rules, out of office replies, meeting invites and responses, mail you sent only to yourself, very short messages, encrypted mail and a few other types. Microsoft's Copilot in Outlook FAQ adds that Prioritize supported only Microsoft's Tier 1 languages and, like other Copilot features in Outlook, worked only on your primary Exchange Online mailbox, not shared, delegate or archive mailboxes.

When Copilot Prioritize goes away

Microsoft announced the change in Message Center post MC1519861, published October 21, 2026 and updated October 22 (you can read it in the Message Center archive). The key points:

Microsoft suggests admins tell affected users, prepare help desk staff and remove references to Prioritize from internal training and documentation. It did not name a replacement. Windows Central noted on October 23 that Microsoft had shared little about the reason beyond that simplification goal.

The retirement is a surprise, since Microsoft promoted the feature heavily. In a July 2025 Inside Track post, Microsoft's own IT team said Prioritize had reached more than 2,000 email tenants and 3.7 million accounts at that point.

Why your Copilot Prioritize option is missing

If you search for Prioritize in Outlook and can't find it, there are three likely reasons:

1. The rollback reached you. The removal is gradual over five months, so some people will lose the arrows and summaries before their coworkers do.
2. It never reached you. Microsoft's help page always said the option was rolling out gradually and suggested trying again in a few days. With the retirement underway, it won't arrive now.
3. Your mailbox isn't eligible. Shared, delegate and archive mailboxes, and mailboxes not hosted on Exchange Online, never supported Copilot scenarios in Outlook.

Switching between new and classic Outlook won't bring it back, because the rollback covers all clients.

Step 1: save your Prioritize instructions today

Before the setting disappears, open Settings > Copilot > Prioritize and copy every instruction you wrote into a note. They describe what matters to you in your own words, and you'll reuse them as rules, as a triage prompt or as labels in another tool.

Sort them into two groups as you copy:

• Rule friendly: anything tied to a sender, a domain or a word in the subject, such as "It's from my manager" or "It's an automatic notification from our billing system."
• Judgment calls: anything that needs the email to be read, such as "It's about a customer complaint" or "It contains a deadline." Rules can't handle these well. AI triage can.

Step 2: turn on Focused Inbox

Focused Inbox is the closest built in option, and it works without any Copilot license. Microsoft's Focused Inbox page says it splits your inbox into Focused and Other tabs, using the people you interact with and filtering out automated and bulk mail.

To turn it on:

• New Outlook for Windows: select View > View Settings, go to Mail > Message List, choose your account, check Sort messages into Focused and Other, then select Save.
• Classic Outlook: on the View tab, select Show Focused Inbox.
• Outlook on the web or Outlook.com: go to Settings > Mail > Message List and check Sort messages into Focused and Other.

Then train it. Right click a message in the wrong tab and choose Always move to Focused inbox or Always move to Other inbox, and future mail from that sender follows your choice. Unlike Prioritize, Focused Inbox sorts mail already in your inbox as soon as you turn it on. It doesn't give reasons or summaries, and it doesn't work on shared mailboxes.

Step 3: rebuild your instructions as Outlook rules with Copilot

Your rule friendly instructions can become standard Outlook rules, and you can create them by asking Copilot in plain language. Microsoft's guide to creating Outlook rules with Copilot gives examples such as "Categorize emails from my manager as Important" and "Move emails with Invoice in the subject to the Invoices folder."

A few details from that page are worth knowing:

• Copilot shows a summary of the condition and the action and asks you to confirm before it creates anything.
• If the folder or category doesn't exist yet, Copilot offers to create it along with the rule.
• You can ask "Show me my current rules," change a rule, disable it or delete it, all from chat.
• Rules created this way are normal Inbox rules, so they only affect future mail.
• It works in Copilot Chat and in the Copilot side pane in classic and new Outlook for Windows, Outlook on the web, Outlook for Mac, iOS and Android. On mobile, the link to the Rules settings page isn't available.

A good pattern is to recreate Prioritize's up arrow with a category. For example, ask Copilot to categorize mail from your manager and your top three clients as Important, then sort or filter by that category. One caution: moving mail out of the Inbox hides it from Focused Inbox, so for important senders, categorize rather than move.

Step 4: use Copilot chat for judgment calls

The instructions that need someone to actually read the email are where Prioritize was strongest, and Copilot chat can still cover part of that on demand. Microsoft's email triage guide lists actions you can take by typing commands: pin, flag with a reminder, mark read or unread, archive, delete, move, set categories and create folders. Commands such as "Pin my emails from my manager" or "Show me the latest email from my manager" work on one message or a group. If a command affects more than five emails, Copilot asks you to confirm.

The difference is timing. Prioritize worked automatically on every new message, while chat triage only runs when you ask. So make it a habit: once in the morning and once after lunch, paste your judgment call instructions into Copilot chat and ask it to find recent mail that matches, then pin or flag what it finds. Triage commands are English only for now, and voice commands work in Outlook for iOS and Android. For more Copilot habits at work, see our guide on how to transcribe a meeting with Copilot, and the Microsoft 365 Copilot tool page.

Step 5: add a separate AI inbox tool if you miss automatic sorting

If the manual routine above feels like a step backward, several email tools still sort mail automatically and support Microsoft 365 accounts. Check with your IT team first, since many organizations restrict which outside apps can connect to work mail.

Superhuman replaces Outlook as your email app. Its Mail plans page lists Split Inbox, Auto Labels and Auto Summarize on Starter, with Custom Auto Labels with AI, Auto Drafts and Ask AI on Business. That makes it the closest match to Prioritize's mix of sorting and summaries, if you're willing to change clients.

Fyxer works inside the inbox you already use. Its pricing page says automatic labeling starts with Pro and that the free plan doesn't sort your inbox. Sorting uses credits at five emails per credit, so a heavy inbox eats into the monthly allowance.

SaneBox runs on the server side, so it works in Outlook on any device without a new app. Its homepage lists support for Microsoft 365, Exchange and ActiveSync servers, and says it looks at basics like sender, subject and date rather than storing full emails.

For a wider comparison, including options for Gmail, see our best AI email assistant guide. If you also have a personal Gmail account, Google's newer take on a priority view is covered in Gmail AI Inbox: how to use it or turn it off.

Which option should you choose?

• You only want the noise gone: Focused Inbox plus two or three rules. It costs nothing extra and takes a few minutes.
• You relied on the reasons and the high priority filter: rules that categorize key senders, plus a daily Copilot chat triage using your saved instructions.
• You want hands off AI sorting again: SaneBox if you want to stay in Outlook with minimal change, Fyxer if you also want drafted replies, Superhuman if you're open to a new email app.

FAQ

Is Copilot Prioritize being discontinued?

Yes. Microsoft's Message Center post MC1519861 says Copilot Prioritize in Outlook is being retired. The rollback starts on October 26, 2026 and is expected to be complete by the end of March 2027, across all Outlook clients.

Why did my Copilot Prioritize my inbox option disappear?

Most likely the gradual rollback has reached your account. It can also be missing because it never finished rolling out to you, or because you're using a shared, delegate or archive mailbox, which Copilot in Outlook never supported.

What replaces Copilot Prioritize in Outlook?

Microsoft hasn't named a replacement. The closest built in options are Focused Inbox for automatic sorting, Outlook rules you can create by asking Copilot, and Copilot chat triage for pinning, flagging and categorizing mail on request.

Can I turn Copilot Prioritize back on?

No. Once the rollback reaches your account, the feature is removed from every Outlook client and can't be switched back on. Save your instructions from Settings > Copilot > Prioritize before that happens.

Is Focused Inbox the same as Copilot Prioritize?

No. Focused Inbox splits mail into Focused and Other based on who you interact with, and you train it by moving messages. Prioritize gave each message a high, normal or low score, showed a reason and a summary, and followed written instructions.

Will my existing Outlook rules be affected?

Microsoft's notice only covers the Prioritize feature. Standard Inbox rules, including rules you created by asking Copilot, are a separate feature and only act on future incoming mail.