Office for Mac Issues

How to Automatically Mark Junk Email as Read in Outlook for Mac

Aamir Naveed Akram Oct 9, 2026 868 views

Question details

The user wants to know if it is possible to configure Outlook for Mac to automatically mark messages in the Junk Email folder as read.

How to Automatically Mark Junk Email as Read in Outlook for Mac

Product: Microsoft Outlook
Device & OS: macOS
Scenario: Managing and organizing unread junk emails to keep the mailbox clean without manually marking them as read.
Observed behavior: Outlook for Mac lacks a built-in rule or setting to automatically mark incoming junk emails as read.

Before you start

Ensure your Outlook app is updated to the latest version on your Mac. It is highly recommended to quickly skim your Junk folder before marking everything as read or mass-deleting to avoid missing legitimate emails that were mistakenly marked as spam.

Solution 1Recommended

Manually Review and Mark Junk Email as Read

Since Outlook for Mac does not provide a built-in automatic rule for this action, the safest and most effective method is to manually review and clear the folder periodically.

To protect users from malicious read-receipt triggers, Outlook restricts client-side rules from automatically processing emails sent to the Junk folder.

Open Outlook for Mac

Launch the Microsoft Outlook application on your Mac and navigate to your folder pane on the left side of the screen.

Locate the Junk Email Folder

Find and click on the 'Junk Email' folder for the specific email account you wish to manage.

Mark All as Read

Right-click (or Control-click) the 'Junk Email' folder and select 'Mark All as Read' from the context menu to clear the unread notification badge.

Empty the Folder

Once reviewed, you can right-click the folder again and select 'Empty Folder' to permanently delete all junk messages.

Manually Review and Mark Junk Email as Read

Automatic Deletion: Depending on your email provider and account type (e.g., Exchange or Office 365), messages in the Junk Email folder may be automatically deleted after a specified retention period, typically 10 to 30 days.

Solution 2

Configure Rules via Outlook on the Web (Exchange/Office 365)

If you use an Exchange or Outlook.com account, you may be able to set up server-side rules via the web application that sync down to your Mac client.

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Frequently Asked Questions

Why doesn't Outlook for Mac have a built-in rule to mark junk as read?

Outlook intentionally restricts automated client-side actions on the Junk Email folder to protect users. If junk emails are automatically marked as read, it could trigger malicious read-receipts or tracking pixels embedded in spam emails, confirming to spammers that your email address is active.

Can I automatically delete junk email instead of sending it to the junk folder?

Yes, depending on your account settings and server environment, you can adjust your Junk Email protection level to permanently delete suspected junk email instead of moving it to the Junk folder. However, this is risky as legitimate emails mistakenly flagged as spam will be lost.

How long do junk emails stay in my Outlook folder on Mac?

The retention period for the Junk Email folder depends entirely on your email service provider. For most Microsoft Exchange and Outlook.com accounts, items in the Junk Email folder are automatically permanently deleted after 10 to 30 days.

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