- Mark every email in a folder as read
- Shortcuts for single emails
- In Outlook on the web
- Change when Outlook marks emails as read
- Before you mark everything as read
- Mark as read, archive or delete?
- Use rules so notifications skip the inbox
- Stop the unread pile coming back
- Unread counts on your phone
- Inbox habits that save time
- My verdict
- Frequently asked questions
To mark all emails as read in Outlook, click the folder (such as your Inbox), click any message, press Ctrl+A to select every message in that folder, then right-click and choose Mark as Read. In Outlook on the web, right-click the folder itself and choose the option to mark all as read.
A badge showing hundreds of unread emails is enough to put anyone off opening Outlook. If most of them are newsletters and notifications you'll never read, marking them all as read is a quick reset. It takes a few seconds, but it works one folder at a time, and there's a setting that changes when Outlook marks things as read in the first place. Here's how to do both.
Mark every email in a folder as read
- In the folder pane, click the folder you want, for example your Inbox.
- Click any message in the list.
- Press Ctrl+A to select every message in the folder.
- Right-click the selected messages.
- Choose Mark as Read.
Microsoft notes this works on one folder at a time, so repeat it for any other folders with a pile of unread mail.
Shortcuts for single emails
| Shortcut | What it does |
|---|---|
| Ctrl+Q | Marks the selected message as read |
| Ctrl+U | Marks the selected message as unread |
| Ctrl+A | Selects every message in the current folder |
| Ctrl + click | Selects several individual messages |
Marking an email as unread is just as useful: it's a quick way to leave yourself a reminder to come back to something important.
In Outlook on the web
In the browser version of Outlook, you can right-click a folder in the folder list and choose the option to mark all its items as read, which saves selecting everything first. Use it on folders full of notifications, like a project tool or social media alerts.
Change when Outlook marks emails as read
By default, Outlook marks a message as read as soon as you select it. If you skim your inbox and lose track of what you've really read, you can change this in classic Outlook:
- Select File, Options, then Advanced.
- Under Outlook panes, select Reading Pane.
- Tick Mark items as read when viewed in the Reading Pane and set how many seconds to wait, such as 30.
- Or untick both mark-as-read options so messages only change when you choose.
- Select OK twice.
A short delay is a good middle ground: clicking past an email by accident won't mark it as read, but reading it for a few seconds will. Microsoft notes some of these options aren't available on every Windows version.
Before you mark everything as read
- Scan the senders quickly for anything from a client, your bank or your boss.
- Search for words that matter to you, such as 'deadline' or 'contract', and flag those first.
- Consider marking only older emails as read, keeping the last day or two unread.
Mark as read, archive or delete?
Marking as read only changes the label; the emails stay in your inbox. If you're doing a big clear-out, it's often better to go further. Select the old emails with Ctrl+A and archive them, so they're out of your inbox but still searchable later. Or delete the obvious junk, then empty Deleted Items to free up space. Marking as read is the quickest fix for a scary number, but archiving is what gives you a clean, calm inbox you'll be happy to open in the morning.
Use rules so notifications skip the inbox
Most unread piles are built from automated emails: alerts from apps, order updates and social notifications. You don't need to read most of them, but you don't want to miss the odd important one either. A rule that moves them into their own folder keeps your inbox for people, and you can glance at the folder once a day and mark it all as read in one go. It's the single biggest change you can make to how your inbox feels.
Stop the unread pile coming back
Marking all as read treats the symptom. To stop the pile rebuilding, unsubscribe from newsletters you never open, set up rules that move notifications into their own folders, and use Outlook's Focused Inbox to keep important mail in view. A folder full of unread automated emails you deliberately ignore is fine; an inbox full of them hides the messages that matter.
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Unread counts on your phone
Read status syncs with your mailbox, so marking emails as read in Outlook on your computer clears them on your phone too, and the other way round. If the numbers don't match, give it a minute to sync, or pull down to refresh in the mobile app.
Inbox habits that save time
Check email at set times rather than all day, deal with each message once (reply, file, delete or flag), and keep your inbox for things that need action. My office productivity hacks cover more of these, and if newsletters are the main cause of your unread count, my guide to AI email summaries explains how inbox tools are changing how people read them.
My verdict
Click the folder, click a message, press Ctrl+A, right-click and choose Mark as Read. Use Ctrl+Q and Ctrl+U for single emails, add a short delay before Outlook marks things as read, and fix the cause with rules and unsubscribes so the pile doesn't return.
Frequently asked questions
How do I mark all emails as read in Outlook?
Select the folder, click any message, press Ctrl+A, right-click and choose Mark as Read.
What is the shortcut to mark as read in Outlook?
Ctrl+Q marks a message as read, and Ctrl+U marks it as unread.
Can I mark all folders as read at once in Outlook?
Microsoft's steps work on one folder at a time, so repeat them for each folder.
How do I stop Outlook marking emails as read automatically?
In classic Outlook, go to File, Options, Advanced, Reading Pane, and untick the mark-as-read options or add a delay.
Does marking emails as read in Outlook sync to my phone?
Read status is stored in your mailbox, so changes on your computer show on your phone after it syncs.
