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Written By Rohit Singh
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Updated on May 5th, 2026
Regular Outlook users have definitely noticed how many unwanted emails are in their inboxes. Some are promotions, some are random newsletters you never signed up for, and some are just straight-up spam. It gets annoying fast, especially when important emails get lost in clutter. The good news is that there are a few simple ways that you can use to stop junk email in Outlook.
Many users think spam emails are still appearing in their Outlook inboxes even after they stop receiving them.
Microsoft Outlook has a built-in feature that helps to catch spam junk emails on its own. When it spots something suspicious, it moves it to the Junk Email folder automatically instead of dropping it in your main inbox.
But the default settings are very basic. It’s set to a low protection level out of the box, which means a lot of unwanted emails still move through without any problem.
It also doesn’t learn from your behavior on its own. So even if you keep deleting the same type of spam, Outlook won’t automatically start blocking it unless you tell it to. That’s why most people adjust things manually to block junk emails in Outlook.
In this section, we will move on to some ways that will help you avoid those junk emails. Additionally, you don’t need to have any technical knowledge to block spam emails in Microsoft Outlook.
Outlook has a junk filter already running in the background. Most people just don’t know you can make it stronger. Here’s how to adjust it:
Once you set it to High, Outlook will start catching more junk before it hits your inbox.
If the same person or company keeps emailing you, just block them directly. It takes about ten seconds.
That sender won’t be able to land in your inbox again after this.
This method lets you manage a whole list of blocked senders in one place instead of doing it one by one.
You can also add trusted senders to the Safe Senders list here so their emails never go to junk by mistake.
Sometimes the easiest fix is just unsubscribing. If it’s a newsletter or promotional email, there’s usually an unsubscribe link at the very bottom.
Just be careful with this one. Only unsubscribe from emails that look like real companies. If the email looks shady, don’t click anything in it — just block the sender instead.
These methods should help you to stop junk email in Outlook without trouble. Some of them take less than a minute to set up and make a noticeable difference quickly.
Before you start making changes to your Outlook settings or doing anything major with your mailbox, it’s actually a smart move to take a backup first. For that, you can use the Cigati PST Converter Tool. It lets you back up your Outlook PST files without any complicated setup. Your emails, attachments, and folder structure stay intact.
Once your backup is done, go ahead and apply whichever spam blocking method works for your situation. Most users find that combining two or three of these methods gives the best results.
You May Also Read: Outlook Junk Mail Going to Inbox
Ans: Junk emails usually come from websites you signed up for, data leaks, or spammers testing active email addresses. Even clicking on one suspicious email can let them know your account is active.
Ans: Yes, Outlook has a built-in junk filter that moves suspicious emails to the Junk folder. However, its default setting is basic, so some unwanted emails may still reach your inbox.
Ans: The quickest way is to block the sender directly. You can right-click the email, go to Junk, and select “Block Sender.” This stops future emails from that address.
Ans: Yes, it’s always a safe practice. Before changing settings or cleaning up your mailbox, you can back up your data using the Cigati PST Converter Tool. It helps you securely save your emails, attachments, and folders without any risk of data loss.
About The Author:
Rohit Singh is an Email Backup, Recovery & Migration Consultant and is associated with Software Company from the last 3 years. He writes technical updates and their features related to MS Outlook, Exchange Server, Office 365, and many other Email Clients & Servers.
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