Block emails not working

Question

When using outlook for 365 and I attempt to block an email nothing happens. I highlight a email and select block send and nothing happens. Tried using my regular outlook and I get a message

we could not block sender tray again later

Help please

Answer 1

Hi,

Thank you for posting, I am here to help. To block sender please follow this steps:

To block messages from specific email addresses or domains from reaching your inbox. When you add an email address or domain to your blocked senders list, Outlook automatically moves messages from that sender to the Junk Email folder.

When you block an account in Outlook, it will not appear in Teams people picking and search unless you have interacted with that account in Teams. You can still call/chat with this person by typing their complete email address (Teams tenant policies will apply).

Open Outlook then go to Settings and select Mail. Open Junk email enter the email address in Blocked senders and select Add. If you want to block all email from a domain, enter the domain name in Blocked domains and select Add and select save.

For more details you can check this article:

https://support.microsoft.com/en-us/office/block-or-unblock-senders-in-outlook-9bf812d4-6995-4d19-901a-76d6e26939b0

I hope you find this information helpful. Please let us know if you have any further questions If the answer is helpful, please click "Accept Answer".

Best regards,

Jansher

Answer 2

If you're having trouble blocking emails in Outlook for Microsoft 365, here are a few troubleshooting steps you can try:

1. Check Internet Connection: Ensure that you have a stable internet connection, as connectivity issues can affect the functionality of Outlook.
2. Update Outlook: Make sure your Outlook application is up to date. Sometimes, bugs in older versions can cause features to malfunction.
3. Use the Microsoft Defender Portal: Instead of blocking senders directly in Outlook, you can use the Tenant Allow/Block List in the Microsoft Defender portal. This allows you to block domains and email addresses more effectively. You can access it by going to Email & collaboration > Policies & rules > Threat policies > Rules section > Tenant Allow/Block Lists.
4. Outlook Blocked Senders List: If you are trying to block a sender for just your mailbox, ensure you are adding them to the Blocked Senders list correctly. You can find instructions on how to do this in the Outlook settings.
5. Check for Errors: If you receive an error message stating "we could not block sender, try again later," it may indicate a temporary issue with the Outlook service. Waiting a while and trying again might resolve the issue.
6. Contact Support: If the issue persists, consider reaching out to Microsoft Support for further assistance.

These steps should help you troubleshoot the blocking issue in Outlook.

---

References:

• Create sender blocklists for cloud mailboxes
• Use Outlook Blocked Senders