How to Block Emails on Outlook

Now more than ever, it seems like every company you interact with or store you walk into asks for your email to loop you into mass marketing communication. Sometimes, you end up on mail chains that you wish you could pull yourself off of. And even then, unsubscribing from emails does not always stop unwanted spam and communication from entering your inbox. The following guide will teach you specifically how to block emails on Outlook, and why you should block certain types of communication.

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Why am I getting unwanted emails in my Outlook inbox?

According to Statista, more than 53% of emails are spam. If you are anything like the rest of us, getting this many unwanted emails is enough to drive you mad. However, the way in which these emails ended up in your inbox is often attributed to multiple factors.

  1. You subscribed to an email chain. This is a common, and super easy, way for unwanted messages to show up in your Outlook. Signing up for email communication is especially common when you purchase a product or service on a website; they often hide a little check mark at the bottom of the check out page that, if unclicked, leads to constant email communication.
  2. You put your email out publicly. If your address somehow happens to end up on a public forum or webpage, internet crawlers are sure to get their hands on it and sell that information to other companies.
  3. A company you subscribed to had a data breach. You would be surprised at how commonly this occurs. When a company’s website data is breached, and the company has your information, others are able to access most if not all of that data, including your email address.
  4. You have been a victim to malicious email in the past. It happens to the best of us—you click on a message that has the appearance of good. However, on the inside, the mail is filled with malicious content. Clicking on a message from a malicious sender can often alert them that your inbox is active, thus sending more annoying and dangerous messages into your inbox.

Why you should block emails in Outlook

Blocking emails is a common practice, and should be done for the following reasons:

  1. To remove malicious senders from your inbox. As described above, opening emails from malicious senders often alerts them that your inbox is active. This can lead to all sorts of additional and inconvenient communication from these malicious senders and others.
  2. Extract unnecessary communication from your inbox. Again, there are times when unnecessary communication clutters your inbox. Blocking irrelevant or annoying senders cuts down on the clutter.
  3. Maintain a clean and organized email inbox. Who wants 1,000s of emails floating in their inbox? Blocking unnecessary communication helps you to maintain that dream of inbox zero.

How to Block an Email Address in Outlook

There are two different places to access Outlook — on the desktop and in the mobile app. Read below to find out how to block emails in Outlook.

How to block emails on Outlook desktop

  1. Open up your inbox.
  2. Click on the sender you would like to block, or messages from this sender.
  3. Hover over the toolbar at the top. Select the “Junk” or “Spam” option and then select “block.”
  4. Click “OK.”
  5. The messages you selected from the sender will now be deleted and all future communication efforts from this sender will be blocked.

Follow our guide on how to block emails on Mac.

How to block emails on Outlook app

Unfortunately, the Outlook mobile app does not provide access to block senders. If you would like to block a sender on the Outlook desktop app, follow the instructions listed above. However, you can send emails to your spam folder from the mobile app. Doing so will force all future communication from that email address into your spam folder.

To send communication to your spam folder, follow these steps:

  1. Open the Outlook app.
  2. Select a message from the sender you want to block.
  3. In the upper right-hand corner, click the three vertical dots.
  4. Select the “Move to Spam” option.

You can also send communication to your spam folder by holding down on a message and clicking on the “More” icon in the top right-hand corner.

How to Block a Domain in Outlook

You might know of a specific domain you want to stop getting communication from. Rather than blocking individual email addresses, you can actually block an entire domain. Follow these steps below to do so on Outlook desktop.

  1. Log into your account.
  2. Select the “Settings” gear in the top right-hand corner.
  3. From the drop down menu, hit “View all settings.”
  4. A flyout menu will appear. Select the “Mail” option in the left-hand column.
  5. Click on the “Junk Email” option.
  6. Under the “Blocked Senders and Domains” section, click the “Add” button.
  7. Add the specific domain here and then hit the enter button.

How Clean Email Can Help

Sometimes spammers use multiple emails to target your inbox with unwanted communication. Utilizing a safe resource, such as Clean Email, will create automated rules to stop further communication from shady email addresses and organizations. For those who need a lot of help blocking nasty senders, this is a perfect solution. Check out our guidelines on how to block an entire domain in Clean Email here.

Block emails on Yahoo with Clean Email automaticallyBlock emails on Yahoo with Clean Email automatically

Learn more about how to block an email address on iPhone and about blocking emails on Android in our other posts.


Unfortunately, unwanted email communication makes it into everyone’s inbox. However, there are multiple ways to rid your mailbox of irrelevant communication. In addition to all the ways we can do this in Outlook, Clean Email offers comprehensive solutions to all of your email needs.

How to Block Emails on Outlook - FAQs

How do I block emails on Outlook mobile?

Unfortunately, the Outlook mobile app does not provide access to block senders. Alternatively, you can block a sender on the Outlook desktop app or you can send emails to your spam folder from the Outlook mobile app. Doing so will force all future communication from that email address into your spam folder.

How do I block multiple emails on Outlook?

As it currently stands, Outlook does not have a feature to block multiple emails at once.

How many emails can I block in Outlook?

Outlook has a maximum of 500 unique email addresses you can block at a time.

How do I permanently block an email in Outlook?

To permanently block an email address in Outlook, follow these steps below:
1. Log into your inbox and select “Options” in the upper right-hand corner.
2. Click “More Options.” Then select “Safe and Blocked Senders” under the “Preventing Junk Mail” section.
3. Click “Blocked Senders.” Type in the email address or domain you would like to stop getting messages from and select “Add to list.” Adding the email address here should cut communication completely.

How do I find my blocked senders list in Outlook?

To view your blocked senders list in Outlook, follow these steps:
1. Open your inbox and go to “Settings.”
2. Select the “Mail” option and then select “Junk Email.”
3. Your list of blocked senders should appear here.

Clean Email Team Updated on May 8, 2022
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