AI WORLD HQHow to Triage and Clean Up an Overwhelming Inbox with Copilot
Use Copilot inside Outlook to summarise, prioritise and draft replies so a 500-message inbox shrinks to the five emails that matter today.
In short: Copilot can turn a 500-message inbox into five emails that actually need your attention today, but you need a Microsoft 365 plan with Copilot included, and Copilot drafts your replies rather than sending them on your behalf.
If your inbox feels like a mountain and you're scared to open Outlook, this guide is for you. In about 20 minutes, you'll turn a clogged inbox into a short list of real priorities — and you won't need to read every single message to do it. This works best for people who handle a mix of work email and personal mail in Microsoft 365.
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- A Microsoft 365 account with a Copilot licence. Copilot is included with some Microsoft 365 business and enterprise plans, and is also available as Copilot Pro for personal Microsoft 365 subscriptions (around $20 AUD per month, billed by Microsoft). Free personal Outlook accounts don't include Copilot features.
- The new Outlook — on the web at outlook.com (or your work sign-in page), the new Outlook for Windows (the toggle near the top-right says "Try the new Outlook"), Outlook for Mac, or the Outlook mobile app. The classic Outlook for Windows doesn't have the full Copilot experience.
- About 20–30 minutes for the first clean-up. After that, around five minutes a day keeps it tidy.
Open Outlook and find the Copilot button
Open Outlook on whichever device you prefer. If you're on the web, sign in at outlook.com or your work's Microsoft 365 sign-in page. If you're on a computer, open the new Outlook for Windows or Outlook for Mac. The new Outlook has a cleaner ribbon at the top and a more obvious Copilot button.
Look for a button labelled Copilot with a small four-pane colourful icon, usually near the top-right of the screen. Clicking it opens a chat-style panel on the right-hand side. On mobile, the Copilot entry point is sometimes tucked inside an Apps or Tools menu — tap your profile icon to find it.
If you can't see the Copilot button at all, two things are usually true: you're on the classic Outlook for Windows (toggle to "Try the new Outlook" at the top-right), or your account doesn't have a Copilot licence yet (check with your IT team or your Microsoft 365 subscription page).
You'll know it worked when you can click the Copilot button and a panel slides open on the right side of the screen, ready for you to type.
Ask Copilot to summarise your unread emails
Now you're in the Copilot panel. At the bottom is a text box where you type a request. Press Enter or click the send arrow.
Copilot scans your unread mail and returns a short summary grouped by sender or topic — for example, "3 from your manager, 2 from a client, 14 newsletters". You'll see this as a few bulleted points inside the Copilot panel, not as new emails in your inbox. The summary updates each time you ask, so you can re-run it after cleaning up.
If the text box is labelled differently on your version — "Message Copilot" or behind a chat icon — that's fine, the behaviour is the same. On mobile, the panel usually takes the full screen. If nothing appears after 15 seconds, refresh and try once more — Copilot occasionally needs a moment to load on first use.
You'll know it worked when a short, structured list appears in the Copilot panel, with names, topics and rough counts.
Spot the emails that actually need a reply
This is the heart of the triage. Stay in the Copilot panel and ask a follow-up question that filters the summary down to what really matters. Copilot ranks using signals like who sent it, urgency words in the subject line, and time-sensitive phrases such as "by Friday" or "ASAP".
You should now see a much shorter list — usually three to five emails Copilot considers the most important. Each one comes with a short reason next to it, like "from your manager, mentions a deadline" or "client waiting on a quote". This is the list you'll actually act on today.
If the list is too long, be more specific. If it's too short, ask for more. Vague requests give vague results — the more you tell Copilot about what "important" means to you, the better the ranking.
You'll know it worked when you can glance at the Copilot panel and immediately name the three to five emails that deserve your real attention.
Draft replies in your own tone
Open the first email that needs a reply. Look inside the message for a Copilot button — usually labelled Draft a reply or shown as a small Copilot icon near the reply arrow. Click it. A reply window opens with Copilot's suggested text already filled in.
Read the draft carefully. Copilot usually matches the tone of the original email and pulls in useful context from the thread, but it can still sound stiff or miss a personal detail. Edit the draft to add anything specific, soften the tone, or remove anything you'd rather not say.
If the "Draft a reply" button isn't there, look for it inside the ⋯ menu near the reply arrow, or right-click the email. On older Outlook versions this feature may not exist — work from the Copilot summary and write the reply yourself.
You'll know it worked when the reply box contains a complete draft that mostly says what you want, with your edits on top. Important: Copilot never sends anything without you pressing Send.
Sweep the noise: archive, delete, unsubscribe
Now for the easy wins. Ask Copilot to list the newsletters, automated notifications and marketing emails sitting in your inbox. It pulls them out into a single view, so you can see the noise without scrolling through real mail.
Go through the list. For each item, either archive it (moves it out of the inbox but keeps it searchable), delete it, or, if it's a recurring sender you don't want, look for the unsubscribe link Copilot usually highlights. Most legitimate newsletters include a one-click unsubscribe at the bottom of the email.
If unsubscribe links aren't showing, your reading pane may be hiding them — open one email in its own window and look at the very bottom. Copilot sometimes surfaces the unsubscribe link directly inside its panel so you don't have to open each one.
You'll know it worked when your inbox looks visibly smaller and the only messages left are the ones you genuinely need to act on.
Set up an ongoing triage habit
Make this a five-minute daily habit. Tomorrow morning, before opening any individual email, open Copilot and ask for a fresh summary. Spend two minutes reading the priority list, then reply, archive or delete each item before moving on. The big weekly panic becomes a small daily check-in.
If your work generates a flood of mail, ask Copilot to build a simple Outlook rule — for example, moving every email from your manager into a folder called Priority and flagging it. Copilot can create these without any coding.
If the rule option isn't available on your version, set up Outlook rules manually: Settings → Mail → Rules. Copilot will suggest what to add, and you confirm and save each one.
You'll know it worked when tomorrow's inbox takes you five minutes, not an hour.
- Letting Copilot send replies on its own. Copilot drafts — it never sends unless you press Send yourself. Always read the draft before clicking.
- Trusting the priority list blindly. Copilot ranks using sender, keywords and timing, but it can miss context. An email from your child's school may look low-priority to an algorithm and still be the most important one today.
- Asking vague questions. "Help with my email" gets a vague answer. Specific prompts like "which 5 emails need a reply today" give focused, useful results.
Open Outlook, find the Copilot button, and type: "Summarise my unread emails from today and tell me which ones need a reply." Five minutes, one prompt, and you'll see your inbox shrink in front of you.
❓ Quick questions
How long does this take?
About 7 minutes — the guide has 6 steps, and you can tick each one off as you go.
Which tool do I need?
This guide uses Microsoft Copilot — but the approach works very similarly in other AI assistants.
Do I need to prepare anything?
- A Microsoft 365 account with a Copilot licence. Copilot is included with some Microsoft 365 business and enterprise plans, and is also available as Copilot Pro for personal Microsoft 365 subscriptions (around $20 AUD per month, billed by Microsoft). Free personal Outlook accounts don't include Copilot features.
- The new Outlook — on the web at outlook.com (or your work sign-in page), the new Outlook for Windows (the toggle near the top-right says "Try the new Outlook"), Outlook for Mac, or the Outlook mobile app. The classic Outlook for Windows doesn't have the full Copilot experience.
- About 20–30 minutes for the first clean-up. After that, around five minutes a day keeps it tidy.
What mistakes should I avoid?
- Letting Copilot send replies on its own. Copilot drafts — it never sends unless you press Send yourself. Always read the draft before clicking.
- Trusting the priority list blindly. Copilot ranks using sender, keywords and timing, but it can miss context. An email from your child's school may look low-priority to an algorithm and still be the most important one today.
- Asking vague questions. "Help with my email" gets a vague answer. Specific prompts like "which 5 emails need a reply today" give focused, useful results.
Keep reading
✦ Original step-by-step guide by AI World HQ's AI editorial team. Written in plain language, reviewed for accuracy.
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