How to stop receiving emails from someone on Outlook completely

Question

How to stop receiving emails from someone on Outlook completely

Hyunmin Kim 20

I am receiving a spam email from someone every single day, and even though I have blocked them, the emails they send kept piling up in Junk Folder.

How do I stop receiving those emails so that it doesn't even pile up in Junk Folder?

Answer accepted by question author

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Answer 1

Austin-H 8,330 Microsoft External Staff Moderator

Hi Hyunmin Kim

Thank you for posting question to Microsoft Q&A Forum.

The suggestions from Q&A Assist are were meant for classic Outlook on Windows.

If you are using MacOS, please click on Outlook > Settings like this screenshot below:
User's image

Then Create a mail rule > fill the detail as this screenshot below
User's image

You could replace the email ******@domain.com (this is an example email) with the email address that you would like to have its delivered emails deleted. After setting up the rules, you could click on "Save" and see how it goes.

I hope this information is helpful. Please let me know if you have any further questions.

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Austin-H 8,330 Reputation points Microsoft External Staff Moderator

2026-02-20T06:47:41.45+00:00

Hi Hyunmin Kim
May I know if you have any updates from your end?
I am looking forward to your response.
Hyunmin Kim 20 Reputation points

2026-02-20T06:55:29.1466667+00:00

Thank you for your response. That did delete all the emails that were sent from the sender I want to block. However, it seems the rule is applied only when I run the rule. Is there any way to automatically delete all future emails that will be sent from the sender I want to block?
Austin-H 8,330 Reputation points Microsoft External Staff Moderator

2026-02-20T07:45:55.2066667+00:00

Hi Hyunmin Kim
Thank you for your reply.

Unfortunately no as this is a rule applying the deletion based on your input.

If the blocked senders do have a same pattern (like using the same domain) then you could create a rule from Exchange Admin Center (assuming that you are the administrator) via this guide: https://learn.microsoft.com/en-us/exchange/security-and-compliance/mail-flow-rules/manage-mail-flow-rules

Another approach is setting up the Anti-spam policy (also requires that you are the administrator): https://learn.microsoft.com/en-us/defender-office-365/configure-junk-email-settings-on-exo-mailboxes - via this method, you could set up the policy to delete/quarantine the emails if system detects the email to be spam. However, this also could result some bad side effects (like deleting false positive emails).

The methods I mentioned above only work if you are Administrator - if you are the end user, then the options are limited. Please feel free to ask me if you have any additional questions.
Hyunmin Kim 20 Reputation points

2026-02-20T07:47:57.0966667+00:00

Could you explain what administrator and end user are? I'm using school email.
Austin-H 8,330 Reputation points Microsoft External Staff Moderator

2026-02-20T07:53:36.14+00:00

Hi Hyunmin Kim
Thank you for your quick response.

Administrators here means the IT department from your university/school. And end users mean students in this context.

If you are not the administrator then the options I introduced above could not be applied as it could also affect other end users (students) as they might not want to delete items from blocked senders.

You could ask your IT administrators if my suggestions could be done by them. Otherwise, you might only need to stick with my very first guidance - as it is the only way to make the rule only applying on you. Thus, this has limitation as you need to add more users to match with the rule to satisfy your requirement.
Hyunmin Kim 20 Reputation points

2026-02-20T07:56:52.1533333+00:00

Thank you for the clarification. Then, as you said, it seems running the rule by myself is the only way to tackle the issue.
Austin-H 8,330 Reputation points Microsoft External Staff Moderator

2026-02-20T07:59:00.2433333+00:00

Hi Hyunmin Kim
If you found my initial response helpful, please consider upvoting or marking it as accepted answer - this should help with future similar questions.

Answer 2

To stop receiving emails from someone completely in Outlook, you can take the following steps:

Block the Sender: Make sure you have added the sender to your Blocked Senders list. This can usually be done by right-clicking on an email from the sender and selecting the option to block them.
Use Rules: You can create a rule to automatically delete any incoming emails from that sender before they reach your inbox or Junk folder. To do this:
- Go to the Home tab in Outlook.
- Click on Rules > Manage Rules & Alerts.
- Click on New Rule and select Apply rule on messages I receive.
- Follow the prompts to specify the sender's email address and set the action to delete the email.
Check Anti-Spam Policies: If you are using Exchange Online, ensure that the anti-spam policies are configured to handle such emails effectively. You may need to consult with your administrator to adjust these settings.

By following these steps, you should be able to prevent emails from that sender from piling up in your Junk folder.

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How to stop receiving emails from someone on Outlook completely

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