Summary

Outlook offers several levels of automatic junk email filtering to block unwanted messages. This guide explains how to adjust these settings, manage safe/blocked senders, and review quarantined emails.

Types of Junk Filters

1. Low (Default)

Filters the most obvious junk email. Recommended for most users as it rarely catches legitimate mail.

2. High

Filters many suspected junk emails. Use this if you receive a large volume of spam, but be aware it might catch legitimate emails.

3. Safe Lists Only

The most aggressive setting. Only email from people in your Safe Senders List, Safe Recipients List, and contacts will be delivered. All other email goes to Junk.

4. No Automatic Filtering

Turns off the junk filter (but still blocks emails sent to your Blocked Senders list).

Step-by-Step Configuration

1. Changing the Junk Email Filter Level

• In Outlook, go to the Home tab.
• Click Junk > Junk E-mail Options...
• Select the Options tab.
• Choose your desired filter level:

- Low: (Default)

- High: (Use with caution)

- Safe Lists Only: (Very restrictive)

- No Automatic Filtering: (Disables filters based on content)

• Click Apply and OK.

2. Managing Safe Senders (Whitelist)

Use this to ensure emails from specific people or domains are never blocked.

• Go to Home > Junk > Junk E-mail Options...
• Click the Safe Senders tab.
• Add... Type the email address (e.g., `boss@example.com`) or domain (e.g., `@example.com`).
• Click OK.
• Note: If you check "Also trust email from my Contacts," Outlook will automatically accept emails from anyone in your Contacts folder. This is usually enabled by default.

3. Managing Blocked Senders (Blacklist)

Use this to block specific people or domains.

• Go to Home > Junk > Junk E-mail Options...
• Click the Blocked Senders tab.
• Add... Type the email address or domain you want to block.
• Click OK.

4. Safe Recipients

If you are on a mailing list (e.g., `everyone@company.com`), adding it here prevents it from going to Junk if "Safe Lists Only" is on.

• Go to Home > Junk > Junk E-mail Options...
• Click the Safe Recipients tab.
• Add the email address or distribution list.

5. Reviewing and Releasing Junk Items

The Junk Email folder is emptied automatically after 30 days (default).

• Periodically review the Junk Email folder for legitimate emails.
• If you find a legitimate email:

- Right-click the email > Junk > Not Junk.

- Check "Always trust email from [sender]" if you want to add them to Safe Senders automatically.

- The email will move back to your Inbox.

6. Blocked Senders and Domains Sync

Outlook (Exchange/Office 365) usually syncs your Safe/Bocked lists with the server, meaning you won't see spam even before you download it to your device (server-side filtering).

Best Practices

• Review folder weekly: False positives happen.
• Don't click "Unsubscribe" on obvious spam: This confirms your email address is active, often leading to *more* spam. Use the Block Sender feature instead.
• Use "High" Filter cautiously: It can be very aggressive. Use "Low" and manually block persistent offenders.

Troubleshooting

• Junk button missing: Ensure you are on the Home tab. It is located in the "Delete" group.
• Emails still going to Junk despite Safe Senders:

- Check if you have "Also trust email from my Contacts" unchecked.

- Confirm the email address is spelled perfectly in your Safe Senders list.

- If you recently added a domain to Safe Senders, wait for the server to sync (or force a Send/Receive).

• Junk folder is empty: Check your "Deleted Items" folder, or ensure the filter level isn't set to "No Automatic Filtering."

When to Seek Further Assistance

If you are receiving a massive amount of spam (flooding your Inbox or Junk folder) that makes Outlook unusable, contact IT support. They may need to implement server-side anti-spam rules for your organization or domain (using Microsoft Defender for Office 365 or similar tools).