Unread Messages: Find and Clear Unread Emails

Short answer: Unread messages are emails you haven't opened yet (or have marked as unread again). To see only those, search is:unread in Gmail, choose Filter > Unread in Outlook, or click the Filter button in Apple Mail, which shows unread mail by default. To clear a big backlog, every app can mark a whole folder as read at once. If the unread count won't go away, the unread mail is usually in another folder or account, not your inbox.

What does "unread messages" mean?

Your email app tracks a read or unread status for every message. A new email starts as unread, usually shown in bold or with a blue dot, and becomes read when you open it. You can flip it back to unread as a reminder to come back later. The number next to your inbox, or on the app icon, is the count of messages still marked unread.

Messaging apps work the same way, but the steps below are for email. A large unread count isn't a problem in itself. It becomes one when important messages get buried under newsletters and notifications.

How to find unread emails

App	Show only unread	Mark all as read
Gmail (web)	Search is:unread, or set Inbox type to Unread first	Select all with the checkbox, then Mark as read
Outlook.com, new Outlook	Filter > Unread above the message list	Right-click the folder, then Mark all as read
Classic Outlook	Click Unread above the message list	See the Outlook steps below
Apple Mail (Mac)	Click the Filter button (Unread is the default)	Control-click the mailbox, then Mark All Messages As Read

Gmail

Search for them. Type is:unread in the search box. Combine it with other operators, for example is:unread from:boss@example.com.
Put unread mail at the top. Click Settings, and under Inbox type choose Unread first. Your inbox splits into an Unread section and Everything else.
Mark everything as read. Tick the checkbox at the top left of the inbox to select your messages, then click Mark as read.

Outlook and Outlook.com

Open the folder you want to check.
Near the top of the message list, select Filter, then Unread. The button changes to Unread to show the filter is on.
Select the Unread button again to see all messages.

In classic Outlook, click Unread next to All above the message list. In Outlook.com and the new Outlook, you can clear a whole folder by right-clicking it and choosing Mark all as read.

Apple Mail on Mac

Click the Filter button at the top of the message list, or choose View > Filter > Enable Message Filter. Unread is the default filter.
Or type "unread" in the search field and choose Message is unread.
To mark a whole mailbox as read, Control-click it in the sidebar and choose Mark All Messages As Read.
For a permanent view of unread mail across accounts, create a Smart Mailbox with the condition Message is unread. Our guide to Smart Mailboxes in Mac Mail walks through it.

Mail on iPhone and iPad

In a mailbox list, tap the Filter button, then tap Filtered by to choose Unread or other criteria. Tap the Filter button again to turn it off.

Why your unread count won't go away

A badge that says you have unread mail when your inbox looks empty is one of the most common complaints. Likely causes:

Unread mail in another folder. Spam, Promotions, archived mail or a folder a rule files into can all hold unread messages. In Gmail, search in:anywhere is:unread, which includes Spam and Trash.
Another account. If you have several accounts, the badge may count all of them.
The Dock count on Mac. In Mail, go to Mail > Settings > General and use Unread count to choose which mailboxes are counted on the Mail icon in the Dock.
Sync lag. Read status syncs between devices through your provider. If one device is offline or stuck, its count can be out of date until it syncs again.

How to keep unread messages under control

Check at set times. Two or three passes a day beats reacting to every notification.
Unsubscribe from what you never read. Newsletters are usually the bulk of an unread pile. See how to unsubscribe from emails in Gmail or in Apple Mail.
Let filters do the sorting. Rules that label or archive newsletters and notifications keep them out of the unread count in your inbox.
Declare a fresh start. If the count is in the thousands, mark everything older than a month as read and deal with what's new. Important mail rarely sits unnoticed that long.

For a fuller system, see our guide to organizing your email inbox.

Letting AI sort the pile

Disclosure: we make Canary Mail. A long unread list is mostly a sorting problem: a few messages matter, and the rest can wait. Canary Mail's free plan includes AI inbox sorting, which runs on your device, for unlimited accounts on 2 devices. It works with Gmail, Outlook, iCloud, Yahoo, Exchange and other IMAP accounts on Mac, iPhone, iPad, Windows and Android, and your email isn't used to train AI. Read more about how a smart inbox works.

Frequently asked questions

How do I find my unread messages?

In Gmail, search is:unread. In Outlook and Outlook.com, select Filter > Unread above the message list. In Apple Mail on Mac, click the Filter button; on iPhone, tap the Filter button in a mailbox list.

Why does it say I have unread messages when I don't?

The unread mail is usually in another folder (Spam, an archive or a rule's folder) or another account that the badge also counts. Search for unread mail across all folders, or on Mac change which mailboxes count under Mail > Settings > General > Unread count.

How can I view unread emails in my inbox only?

Open the inbox and turn on the unread filter there: Filter > Unread in Outlook, the Filter button in Apple Mail, or the Unread first inbox type in Gmail, which puts unread inbox mail in its own section at the top.

Are unread messages synced across devices?

For most accounts, yes. Read status is stored with your email provider, so marking a message read on your phone updates your computer once both have synced.

Can I change how unread messages look?

Somewhat, depending on the app. Apple Mail on Mac has a setting to display unread messages in bold, and Gmail can group unread mail at the top with the Unread first inbox type.

Sources

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Unread Messages: How to Find, Filter and Clear Unread Emails (2026)