Outlook offers multiple ways to block unwanted emails. The most common method is using the Block Sender feature, which adds a sender’s email address to Outlook’s blocked list. Once blocked, future emails from that sender are automatically sent to the Junk Email folder instead of your inbox.
However, some senders use multiple email addresses or change their sending addresses frequently. In such situations, Outlook’s Rules feature becomes especially useful because it can filter emails based on keywords, domains, sender names, or other conditions.
It is also important to understand that blocking an email sender does not prevent the sender from sending messages. Instead, Outlook automatically filters those messages before they reach your primary inbox.
In this guide, you will learn the most effective steps to permanently block emails in Outlook.
Permanently Block Emails in Outlook
To permanently block emails in Outlook, open Outlook, select an unwanted email, right-click the message, choose Junk, and then select Block Sender. Outlook will automatically move future emails from that sender to the Junk Email folder. You can also create custom rules, add senders to the blocked list, and configure junk email settings for stronger email filtering.
Let’s learn the complete process in detail!
Step 1: Open Outlook and Identify the Sender You Want to Block
The first step is identifying the sender whose emails you no longer want to receive.
Launch Microsoft Outlook on your computer or open Outlook on the Web through your browser. Navigate to your inbox and locate an email from the sender you wish to block.
Before blocking the sender, take a moment to confirm that the email address belongs to the correct source. Sometimes companies use multiple email addresses for different departments, such as customer support, billing, and marketing. Blocking the wrong address could cause you to miss important communications.
Once you have verified the sender, keep the email selected so you can access Outlook’s blocking options.
For beginners, this step is important because blocking works at the sender level. Selecting the correct email ensures that Outlook adds the right address to your blocked list.
Step 2: Use the Block Sender Feature
Now that you have identified the unwanted sender, you can use Outlook’s built-in blocking tool.
In the desktop version of Outlook, right-click the email message. From the menu that appears, select Junk, then choose Block Sender.
If you are using Outlook on the Web, open the message and click the three-dot menu located near the top of the email window. Select Block and confirm your choice.
Once completed, Outlook adds the sender’s email address to the Blocked Senders List.
Future emails from this sender will automatically bypass your inbox and be redirected to the Junk Email folder. This helps prevent inbox clutter and reduces interruptions from unwanted messages.
This method works well for individual senders and is usually the fastest solution for most users.
Step 3: Verify the Sender Was Added to the Blocked List
After blocking a sender, it is a good idea to verify that Outlook successfully added the address to your blocked list.
In the Outlook desktop application, click Home, then select Junk, followed by Junk E-mail Options. Open the Blocked Senders tab.
You should see the blocked email address listed there.
In Outlook on the Web, select Settings, then choose Mail, followed by Junk Email. Under the blocked senders section, you can review all blocked email addresses and domains.
Checking the blocked list helps ensure that the correct sender was blocked. It also gives you a convenient place to manage blocked addresses in the future.
Many users skip this step, but it can save time later if you need to review or update your email filtering settings.
Step 4: Block an Entire Domain for Stronger Protection
Sometimes unwanted emails come from multiple addresses belonging to the same organization.
For example, you may receive emails from support@example.com, marketing@example.com, and promotions@example.com. Blocking individual addresses may not completely solve the problem.
Instead, consider blocking the entire domain.
In Outlook on the Web, navigate to Settings, then Mail, then Junk Email. Under blocked senders and domains, enter the domain name, such as example.com.
Once saved, Outlook will treat emails from that entire domain as blocked.
This approach is especially useful for recurring marketing emails, spam domains, and organizations that send messages from multiple addresses.
Blocking an entire domain provides broader protection and reduces the need to repeatedly block new sender addresses from the same source.
Step 5: Create a Rule to Automatically Delete Unwanted Emails
Some unwanted emails can bypass standard blocking methods. In those cases, creating an Outlook rule provides an additional layer of control.
Open Outlook and click Rules from the Home tab. Select Manage Rules and Alerts.
Choose New Rule and create a rule that applies to messages from a specific sender, domain, or keyword.
You can configure the rule to automatically delete messages, move them to a designated folder, or permanently remove them.
Rules are powerful because they allow you to customize how Outlook handles incoming messages.
For example, if you receive repeated emails containing specific phrases or promotional keywords, you can instruct Outlook to automatically filter those messages before they appear in your inbox.
This method is especially effective when dealing with persistent spam campaigns.
Step 6: Strengthen Outlook’s Junk Email Protection
Outlook includes advanced junk email filtering features that can further reduce unwanted messages.
In the Outlook desktop application, open Junk E-mail Options and review the available protection levels.
The available settings typically include No Automatic Filtering, Low, High, and Safe Lists Only.
For most users, the High protection setting offers a good balance between spam protection and legitimate email delivery.
If you receive a large amount of spam, increasing the filtering level can significantly reduce inbox clutter.
However, after changing these settings, monitor your Junk Email folder regularly to ensure that legitimate messages are not accidentally filtered.
Maintaining a balance between security and accessibility is important for effective email management.
Step 7: Remove Yourself from Legitimate Mailing Lists
Not every unwanted email is spam. Many messages come from newsletters, online stores, or subscription services that you previously joined.
In these situations, blocking the sender may not always be the best solution.
Open the email and look for an Unsubscribe link, which is typically located near the bottom of the message.
Clicking the unsubscribe link allows you to remove yourself from the mailing list permanently.
This method helps reduce unnecessary email traffic while ensuring that legitimate businesses stop sending promotional content.
Using the unsubscribe option whenever available is often more effective than repeatedly blocking individual senders.
Step 8: Regularly Review Your Blocked Senders List
Email management is not a one-time task. Over time, your blocked senders list may grow significantly.
Periodically review your blocked addresses and domains to ensure they remain relevant.
You may discover outdated entries, accidental blocks, or addresses that no longer need filtering.
Regular maintenance helps Outlook perform more efficiently and ensures that important communications are not mistakenly blocked.
Spending a few minutes reviewing your blocked list every few months can help maintain a cleaner and more organized inbox.
FAQs
Does blocking a sender permanently stop emails from being sent?
No. Blocking a sender does not prevent them from sending emails. Instead, Outlook automatically filters those messages and sends them to the Junk Email folder.
Can I block an entire domain in Outlook?
Yes. Outlook allows you to block entire domains, which is useful when unwanted emails come from multiple addresses within the same organization.
What happens to blocked emails?
Blocked emails are typically redirected to the Junk Email folder. Depending on your settings, additional rules may also delete them automatically.
Can I unblock a sender later?
Yes. You can remove email addresses from the Blocked Senders List at any time through Outlook’s junk email settings.
Why do I still receive emails after blocking a sender?
Some senders use different email addresses, domains, or spoofed addresses. In these situations, creating Outlook rules and blocking entire domains can provide better protection.
Is blocking the same as unsubscribing?
No. Blocking filters emails inside Outlook, while unsubscribing requests removal from a legitimate mailing list. For newsletters and promotional emails, unsubscribing is often the better option.