Hi Hyunmin Kim,
Welcome to Microsoft Q&A Forum! Have a good day and I hope you're doing well!
I completely understand and share your frustration with continuously receiving scam emails from this cult group over the past period. I will guide you on how to set up a server-side rule to completely block them, ensuring these emails no longer appear in any folder, including Junk.
Below is a detailed guide to creating a server-side rule in Outlook. This rule will run directly on the server, allowing permanent deletion of matching emails without manual intervention.
1. Open the Outlook application on your computer.
2. Go to Settings > Rules. You will see the Server rules tab.
3. Select the correct email account that is affected (if you have multiple accounts).
4. Click the New Rule button (or the + sign if available).

5. Set the rule name: Block cult – Delete forever (you can change the name if needed).
In the section When a new message arrives that meets ALL these conditions:
1. Click + Add condition and set up:
- From > Is > Enter the exact email address of the scam sender. Or if they use multiple addresses from the same domain, select From > Contains > Enter the domain.
2. Click + to add another condition: Subject > Contains > Enter characteristic keywords in the email subject (e.g., the cult's name, phone number, or fixed invitation phrases like "new church" or "free Bible study").
You can add more conditions by clicking the "+" sign after each condition.
In the section Do the following:
1. Click + Add action > Select Delete (to permanently delete, not move to Junk).
2. Check the box for Enabled to activate the rule.

3. Click OK to save and apply.
After applying the rule, any new matching emails will be automatically deleted at the server level, so you won't see them anymore.
Additionally, you can also create a similar server-side rule via Outlook Web App (OWA): Detailed instructions are available at: Manage email messages by using rules in Outlook.
I hope this information will be helpful partially for you. If you have any concerns or questions, or if I misunderstood or anything is unclear, feel free to let me know.
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