Reporting an unwanted message as spam in Outlook trains the system to filter similar emails automatically. If you’re wondering how to mark as spam in Outlook, the process is simple and takes just a few seconds. This guide walks you through every method, from the desktop app to the web version and mobile devices.
Spam emails waste your time and can be dangerous. They often carry phishing links or malware. Learning to flag them correctly keeps your inbox clean and secure. Below, you’ll find step-by-step instructions, tips for better filtering, and answers to common questions.
How To Mark As Spam In Outlook
The exact method depends on which version of Outlook you use. But the core idea is the same: you tell Outlook that an email is junk, and it moves it to the Junk Email folder. Future messages from that sender will also be blocked.
Marking Spam In Outlook Desktop App (Windows And Mac)
Outlook for Windows and Mac both have a dedicated Junk button. Here’s how to use it.
- Open Outlook on your computer.
- Select the email you want to report. You can click it once in your inbox.
- Look for the “Junk” button on the Home tab. It’s usually in the Delete group.
- Click the Junk button, then choose “Block Sender” from the dropdown menu.
- The message moves to the Junk Email folder. All future emails from that sender will go there automatically.
You can also right-click the email in your inbox. A context menu appears. Select “Junk” and then “Block Sender.” This is a faster way if you prefer using your mouse.
On Mac, the process is similar. The Junk button is on the toolbar. Click it, or use the dropdown arrow next to it for more options. You can also mark an email as “Not Junk” if you accidentally flagged something.
Marking Spam In Outlook On The Web (Outlook.com)
Outlook on the web works differently from the desktop app. But the goal is the same. Follow these steps.
- Go to Outlook.com and sign in.
- Check the checkbox next to the spam email. You can also open the email.
- At the top of the screen, click the “Junk” button. It looks like a stop sign with an exclamation mark.
- A dropdown appears. Choose “Junk” to move it to the Junk folder. Or choose “Phishing” if the email looks suspicious.
- The email disappears from your inbox. It goes straight to the Junk folder.
You can also right-click the email in your inbox list. Select “Mark as junk” from the menu. This is a quick shortcut.
If you want to report a phishing attempt, use the “Phishing” option. This helps Microsoft improve their filters for everyone.
Marking Spam In The Outlook Mobile App (IOS And Android)
The Outlook mobile app is popular for checking email on the go. Marking spam here is just as easy.
- Open the Outlook app on your phone or tablet.
- Find the spam email in your inbox.
- Tap and hold the email until a menu appears.
- Select “Mark as junk” from the options. On some devices, you might see a trash icon with a stop sign.
- The email moves to the Junk folder. The sender is blocked.
You can also open the email first. Then tap the three dots (More options) in the top right corner. Choose “Mark as junk” from the list.
On Android, the process is identical. The app layout is consistent across platforms. If you make a mistake, you can go to your Junk folder and move the email back to your inbox.
Additional Methods For Reporting Spam
Besides the standard Junk button, Outlook offers other ways to handle spam. These methods give you more control.
Using The Block Sender Feature
Blocking a sender is more permanent than marking one email as junk. It prevents all future emails from that address.
- Right-click the email in your inbox.
- Select “Junk” and then “Block Sender.”
- The email moves to Junk. The sender is added to your Blocked Senders list.
You can manage this list in Outlook settings. Go to Settings > Mail > Junk email. Here you can add or remove senders manually.
Creating A Rule To Automatically Move Spam
Rules let you automate spam handling. For example, you can move all emails from a certain domain to the Junk folder.
- Right-click the spam email.
- Select “Rules” and then “Create Rule.”
- Choose conditions like “From” or “Subject contains.”
- Select the action “Move the item to folder” and choose Junk Email.
- Click OK to save the rule.
Rules are powerful but can be complex. Start simple and test them before applying to all emails.
Reporting Phishing Emails
Phishing emails try to steal your personal information. Outlook has a special way to report these.
- In Outlook on the web, click the Junk button and choose “Phishing.”
- In the desktop app, you can use the “Report Phishing” add-in if it’s installed.
- Microsoft uses these reports to update their security filters.
Never click links in phishing emails. Report them immediately and then delete them.
Why Marking Spam Matters
When you mark an email as spam, you’re not just cleaning your inbox. You’re training Outlook’s filter. The system learns what you consider unwanted and applies that knowledge to future messages.
Over time, less spam reaches your inbox. This saves you time and reduces the risk of clicking a dangerous link. It also helps Microsoft improve their spam detection for all users.
If you ignore spam emails, they keep coming. The filter doesn’t know they’re unwanted unless you tell it. So make it a habit to mark spam every time you see it.
What Happens After You Mark Spam
Once you mark an email as spam, several things happen behind the scenes.
- The email moves to the Junk Email folder.
- The sender is added to your Blocked Senders list (if you chose that option).
- Outlook’s filter updates its algorithm based on your action.
- Future emails from that sender go directly to Junk.
You can check your Junk folder anytime. Emails there are automatically deleted after 30 days. But you can empty it manually if you want.
Managing The Junk Email Folder
Your Junk Email folder holds all the spam you’ve reported. It’s a good idea to check it occasionally. Sometimes legitimate emails end up there by mistake.
How To Review Junk Emails
Open the Junk Email folder from the folder pane on the left. Scan the list for any emails that look important. If you find one, right-click it and select “Junk” > “Not Junk.” This moves it back to your inbox and trains the filter.
You can also empty the folder to free up space. Right-click the Junk folder and choose “Empty Folder.” This permanently deletes all emails inside.
Adjusting Spam Filter Settings
Outlook lets you customize how aggressive the spam filter is. Here’s how to change the settings.
- Go to Settings (gear icon) in Outlook on the web.
- Select “Mail” and then “Junk email.”
- Choose a filter level: Low, High, or Safe Lists Only.
- Add trusted senders to the Safe Senders list to prevent false positives.
- Click Save.
In the desktop app, go to File > Options > Mail > Junk Email Options. Here you can set the same levels and manage lists.
Be careful with the “High” setting. It might block emails you actually want. Check your Junk folder regularly if you use this level.
Common Problems And Fixes
Sometimes marking spam doesn’t work as expected. Here are common issues and how to solve them.
Spam Still Appearing In Inbox
If spam keeps showing up, the filter might need more training. Mark those emails as junk consistently. Also check your Safe Senders list. If the spammer’s address is there by mistake, remove it.
Another reason could be that the spam is coming from different addresses. Blocking one sender doesn’t stop others. In this case, use a rule to block the entire domain.
Legitimate Emails Going To Junk
This is called a false positive. It happens when the filter is too aggressive. To fix it, move the email back to your inbox and mark it as “Not Junk.” Then add the sender to your Safe Senders list.
You can also lower the filter level in settings. But this might let more spam through. Find a balance that works for you.
Junk Button Not Working
If the Junk button is grayed out or missing, try restarting Outlook. If that doesn’t work, check for updates. An outdated version can cause bugs.
On the web version, clear your browser cache. Sometimes cookies interfere with the interface. If all else fails, use the right-click method instead.
Tips For Reducing Spam Long-Term
Marking spam is reactive. But you can also take proactive steps to reduce the amount of spam you receive.
- Don’t reply to spam emails. This confirms your address is active.
- Avoid clicking “Unsubscribe” in suspicious emails. It can lead to more spam.
- Use a secondary email address for sign-ups and newsletters.
- Enable Outlook’s built-in phishing protection in settings.
- Regularly clear your Junk folder to keep it manageable.
These habits, combined with regular spam reporting, keep your inbox clean over time.
Frequently Asked Questions
How Do I Mark An Email As Spam In Outlook On My IPhone?
Open the Outlook app, tap and hold the email, then select “Mark as junk.” You can also open the email and tap the three dots icon to find the option.
Can I Mark Multiple Emails As Spam At Once In Outlook?
Yes. In the desktop app or web version, hold Ctrl (or Command on Mac) and click multiple emails. Then click the Junk button to mark them all at once.
What’s The Difference Between Junk And Block Sender In Outlook?
Marking as Junk moves the email to the Junk folder and trains the filter. Block Sender does the same but also adds the sender to a permanent block list, preventing any future emails from that address.
How Do I Unmark An Email As Spam In Outlook?
Go to your Junk Email folder, right-click the email, and select “Junk” > “Not Junk.” The email moves back to your inbox and the sender is unblocked.
Does Marking Spam In Outlook Help Other Users?
Yes. Microsoft uses aggregated spam reports to improve their filters for all Outlook users. Your actions contribute to a safer email environment.
Final Thoughts On Spam Management
Learning how to mark as spam in Outlook is a small skill with big benefits. It takes seconds but saves you from clutter and potential threats. Whether you use the desktop app, web version, or mobile app, the process is straightforward.
Make it a habit to report spam as soon as you see it. Over time, your inbox will become cleaner and more organized. And if you ever make a mistake, it’s easy to undo.
Keep your filter settings balanced, check your Junk folder occasionally, and use the extra features like rules and block lists. With these tools, you can take control of your inbox and keep spam where it belongs.
Now that you know the steps, go ahead and clean up your Outlook inbox. Your future self will thank you.