White paper: Anticipate and Postpone the Microsoft 2026 Price Increase

How to stop receiving unwanted emails

Unwanted emails, also known as spam, can be a major nuisance in your inbox. At the organizational level, they can not only reduce productivity but also affect your security. In today’s world, where cyber threats are multiplying, it’s crucial to recognize that junk emails are not just a source of irritation but also a potential gateway for more insidious attacks such as phishing. Fortunately, Outlook provides effective features to block these unwanted messages.

In this article, we’ll go through six key steps to help you keep your inbox clean, organized, and secure. By following these steps, you can strengthen your cybersecurity posture while maintaining productivity and peace of mind.

Steps to Block Junk Emails (Spam) in Outlook

Step 1: Access Your Inbox

Open your Outlook application and sign in to your account. Whether you’re using Outlook on the web, the desktop app, or the mobile app, the blocking features are similar.

Step 2: Select an Unwanted Email

Open the email you wish to block. Make sure it’s truly unwanted and that you no longer want to receive messages from this sender.
⚠️ Caution: Never click on suspicious links before blocking the sender!

Step 3: Block the Sender

In your inbox, right-click on the unwanted email. A context menu will appear.
Select “Block” and then “Block Sender.” A confirmation window may appear asking if you’re sure you want to block this sender. Confirm your choice if necessary.

Step 4: Check Your Blocking Settings

To ensure the sender has been successfully blocked and to manage your blocking preferences:

  • Click the Settings icon (represented by a gear) in the top-right corner of the Outlook window.

  • Select Mail from the left-hand menu, then Junk Email from the submenu.
    Here, you’ll see a list of blocked senders. You can add new addresses to block or remove existing ones as needed.

Step 5: Manage Advanced Blocking Settings (Optional)

If you want to fine-tune your spam filtering, you can set up more specific rules for handling junk emails.
Within the Junk Email settings, you can:

  • Add or remove safe senders and domains to prevent legitimate emails from being sent to your junk folder.

  • Enable filters that only trust messages from your safe senders list or contacts.

  • Require confirmation before sending reports about phishing or spam attempts.

Step 6: Create a Custom Junk Email Folder

Creating a dedicated folder for junk mail is a good practice to keep your inbox tidy.
In the left navigation pane of Outlook, right-click your main email address and select New Folder. Name it “Custom Junk Mail.”

💡 Tip: Configure your mail server to automatically redirect suspicious messages to this new folder.
Be sure to check it occasionally to ensure that no legitimate messages were mistakenly redirected there.

To further optimize your filtering, enable image filtering in this folder’s settings — spammers often use embedded images to bypass text filters.

Junk Emails and Phishing

Keep in mind that junk emails can sometimes be phishing attempts. When in doubt, never click on any links within the message!

In professional environments, phishing remains the most common tactic used by cybercriminals in data breaches (Verizon, 2024). Therefore, it’s essential to protect yourself against this growing threat by investing in cutting-edge solutions such as continuous phishing simulation programs and managed cybersecurity services.

In Summary

By following these steps, you can effectively block unwanted emails in Outlook, helping you maintain a cleaner inbox and reduce distractions caused by spam.
Microsoft Defender for Office 365 is also a comprehensive solution that provides organizations with advanced protection against sophisticated threats.

For companies looking to take their cybersecurity even further, our cybersecurity training platform helps raise employee awareness of best practices.

Remember — adopting the right habits is key to strengthening your cybersecurity every day. So don’t wait — start now!

If you’d like to learn more about improving your organization’s cybersecurity posture, reach out to our experts to discuss your needs and concerns.
Our cybersecurity consulting services can help you design a customized security strategy tailored to your business.

For further ...

To no longer receive unwanted emails, several strategies can be implemented:

  • Blocking senders: Use your email features, like Outlook, to block unwanted email addresses. Go to spam settings and add the addresses or domains to the blocked senders list.
  • Use of unsubscribe links: If the emails come from newsletters or promotions to which you have subscribed, use the unsubscribe link often located at the bottom of the message to remove yourself from the mailing list.
  • Setting up filters and rules: Create rules in your inbox to automatically filter emails containing certain keywords or from specific domains to the spam folder.
  • Security software: Consider installing antivirus or monitoring software to protect your inbox from spam and phishing attempts.

By adopting these methods, you can significantly reduce the amount of junk mail in your inbox.

To unsubscribe from all marketing emails, follow these simple steps. First, open an advertising email and scroll to the bottom of the message. There you will usually find an unsubscribe link marked “Unsubscribe” or “Unsubscribe”. Click this link and follow the instructions to confirm your unsubscription. 

Next, use your email service features to manage your subscriptions. For example, on Outlook, go to Settings and select “Show all Outlook settings.” In the “Mail” section then “Subscriptions”, you can see all the mailing lists to which you are subscribed and unsubscribe in one click. See the tutorial here.

For more automated management, consider using dedicated tools like Unroll me ou Clean Email. These apps analyze your inbox and allow you to unsubscribe from multiple newsletters with just a few clicks. They offer a quick and effective solution for keeping your inbox free of unwanted emails.

There are several reasons why you receive a lot of spam emails. Your email address may have been compromised in a data breach, often sold to marketing companies or spammers. These actors then add your address to their massive mailing lists.

Another common cause is the use of your email address to register for various online services, forums, or contests. These sites often share their databases with third parties.

Spammers also use bots to generate combinations of email addresses or to retrieve addresses publicly displayed on the internet.

To reduce the receipt of spam, consider:

  • Use disposable “email addresses” for temporary registrations.
  • Do not display your email address in plain text on social networks or forums.
  • Activate and configure anti-spam filters in your email.

Share article:

This might interest you...

News

F.A.Q about Microsoft 365 Copilot

Microsoft 365 Copilot raises many questions about Copilot licensing and how it works. We have compiled your key questions into four categories: Licensing & Access,

Subscribe to our newsletter

Soyez informé des prochains webinaires, des nouveaux services et des contenus d’intérêt.

Follow us