Complete Guide on How to Block Emails on Outlook in 2026

Introduction:

Inbox overload can feel endless—spam messages pile up, important emails get buried, and productivity takes a hit. If you have been searching for how to block emails on Outlook, you’re not alone. Many users want simple ways to stop spam emails in Outlook without missing critical messages. In this SwifDoo PDF article, you’ll find clear, step-by-step solutions for every Outlook version.

Why Block Emails on Outlook?

Filtering out unwanted emails lets you manage your inbox more effectively, stay focused, and enhance your email security. Understanding how to block an email on Outlook helps you efficiently filter out nuisance or harmful messages.

Here are the benefits of blocking emails in Outlook and when to do so.

Remove recurring spam or promotional messages that you never opted in to receive.
Safeguard your inbox from phishing scams and untrustworthy senders.
Organize your inbox to highlight the emails that matter most.
Stop harassment or unwanted contact from specific email addresses.
Prevent recurring newsletters or automated messages from flooding your inbox.

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How to Block Sender in Outlook on the Web

You can quickly block an email address in Outlook to prevent unwanted messages from hitting your inbox. If you’re wondering how to block emails on Outlook web, the process is quick and user-friendly. Let us learn the two ways to do so.

Quick Method: Block Sender in Outlook Web

Step 1. Launch Outlook Web. And open the message from the sender you wish to block.

Step 2. Now, tap the three-dot menu (More actions) in the upper right corner.

Step 3. Select Block from the dropdown menu.

Step 4. Finally, confirm that all future emails from the sender are sent to the Junk Email folder.

Alternative Method: Block via Settings

Step 1. Access Outlook Web. And open the Settings.

Step 2. Go to Mail and select Junk Email.

Step 3. Next, manually add the email address to your blocklist to stop future messages from that sender

Note. You have the option to add complete domains to your blocklist to stop all related emails.

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How to Block Emails on Outlook Desktop (Windows)

On a Windows computer, blocking unwanted senders in Outlook is quick and straightforward. In just moments, you can filter out distractions and keep your inbox streamlined.

Let us learn how to block emails on Outlook desktop in Windows.

Block Emails on Outlook Desktop (Automatically)

Step 1. Open Outlook on your Windows device to get started.

Step 2. Next, go to your Inbox and find the email from the sender you want to block.

Step 3. Next, tap the Junk button in the toolbar under the Home tab. Then choose Block Sender from the dropdown menu.

Note. Outlook will immediately block the email address. And future emails from this sender will automatically be moved to the Junk Email folder.

Block Emails on Outlook Desktop (Manually)

Step 1. Open the Outlook app, tap Junk in the secondary toolbar, and choose the Junk Email Options.

Step 2. Now, move to the Blocked Senders tab and tap Add.

Step 3. Input the email address or domain you wish to block. And hit OK to save the changes.

Note. Outlook allows you to block up to 10,000 email addresses or domains. If you hit the limit, try blocking whole domains rather than individual email addresses.

Step 4. Once the email or domain is added to your blocked list, select OK to confirm.

The sender will be blocked, and their emails will automatically be directed to the Junk Email folder.

How to Block Emails in Outlook for Mac

Just like on Windows, blocking unwanted messages on macOS is straightforward and takes only a few clicks. Understanding how to block emails in Outlook desktop helps you stop spam efficiently and maintain a tidy inbox.

Let us see how to block emails in Outlook for Mac.

Step 1. Launch the Outlook app on your Mac. And move to your Inbox section.

Step 2. Select the email from the sender you wish to block.

Step 3. Select the Block button in the top toolbar.

Note. When you can’t see the Block option, open the three-dot menu and select Block Sender.

Step 4. Now, a message will show up asking if you’d like to block the sender. Then, press OK to finalize.

Moving forward, messages from the specified sender will be sent to Junk Email automatically.

How to Block Emails on Outlook Mobile App (iOS & Android)

Handling unwanted emails on the Outlook mobile app is simple and convenient on both iOS and Android. Just a few taps let you stop unwanted emails and keep your inbox clean on the move.

Here’s how to block emails on the Outlook mobile app, whether iOS or Android.

Block Emails on Outlook on iOS (iPhone/iPad)

Step 1. Launch the Outlook app on your iPhone or iPad.

Step 2. Open the email you need to block.

Step 3. Press the three dots (…) in the top-right corner of the screen.

Step 4. Select Move to Junk or Report Junk.

Block Emails on Outlook on Android

Step 1. Access the Outlook app on your Android phone.

Step 2. Open the unwanted email.

Step 3. Hit the menu (three dots) and click Report Junk.

Step 4. Done.

How to Block an Entire Domain in Outlook

Blocking an entire domain in Outlook is useful when spam or unwanted emails come from multiple addresses under the same company or source. This method helps you stop all messages from that domain at once, saving time and keeping your inbox cleaner.

Check how to block an entire domain in Outlook desktop and web in a few clicks.

Block Entire Domain in Outlook (Desktop)

Step 1. Open the Outlook app on your desktop. And right-click an email in your inbox.

Next, move to Junk and select "Junk E-mail Options."

Alternatively, go to the Home tab, pick the Junk drop-down menu under the Delete section of the ribbon, and click "Junk E-mail Options."

Step 2. Once the Junk Email Options box opens, click the Block Senders tab. And at the top, click "Add."

Step 3. Input the domain you wish to block as "@domain.com" or "domain.com," then select OK.

You'll now see that domain in your blocked senders list. Do the same to block additional domains.

Step 4. When you finish, select "Apply" and "OK."

This way, all the future emails you receive from that domain go right to the Junk folder.

Block Entire Domain in Outlook (Web)

Step 1. Access Outlook. And select the gear icon on the top right to display the Settings sidebar.

Then, navigate to the bottom and pick "View All Outlook Settings."

Step 2. In the far-left column, click "Mail," and to the right, tap "Junk Email."

In the Blocked Senders and Domains section at the top, select Add.

Step 3. Type the domain you want to block without including the @ symbol.

For example, "domain.com".

Then, press Enter or Return.

Step 4. You can then see the domain in the Blocked Senders and Domains list.

Click "Save" at the bottom and use the X in the top-right to exit the settings.

Now all the future emails will go to the Junk folder.

Automatically Block Emails in Outlook Using Outlook Rules

Outlook rules make it easy to automatically manage your inbox and block unwanted emails as they appear. Easily create rules to block emails by keywords or subjects, ensuring targeted emails are stopped without manual work.

Learn how to use Outlook Rules to automatically block incoming emails from specific senders.

Step 1. Open Outlook and go to the Inbox section.

Step 2. Now, right-click the unwanted email. Click Rules and select Create Rule.

(Optional) Select conditions like sender email.

Step 3. After that, open Advanced Options and choose to Delete it or Move to Junk Email folder.

Step 4. Finally, press Finish to keep similar emails from appearing in your inbox.

How to Unblock Emails in Outlook

Occasionally, you might accidentally block an important sender or decide you want emails from a certain address. Understanding how to unblock emails in Outlook allows you to resume communication without missing important messages. The process is simple and works across all Outlook versions, letting you manage your inbox more flexibly.

Let us check out how to unblock emails in Outlook in a few clicks.

Step 1. Start Outlook on your device. And go to the Home tab.

Step 2. Select Junk and choose the Junk E-mail Options… option.

Step 3. Select the Block Senders tab in the window that opens. And click OK.

Now, find the email addresses or domains you want to unblock.

Note. If the blocked sender's address is not showing in the list, but the email still goes to the 'Junk Email' folder, simply select one of the emails and click 'Junk' > 'Not Junk.'

Ensure the Always trust e-mail from...checked box is ticked and click OK.

Step 4. Tap Remove and select Apply. Then, click OK.

With these steps, emails from that address will now go to your inbox and not the Junk Email folder.

Final Thoughts

Effective inbox management supports productivity and safety, and mastering how to block emails on Outlook gives you full control of spam and unwanted messages. Whether on the web, desktop, Mac, or mobile app, Outlook offers various tools to block spam and keep your inbox organized. Applying these techniques regularly allows you to reduce interruptions and concentrate on priorities. Being proactive helps keep your email organized and reduces stress.