Block Email in Outlook

In the event, you wish to immediately block an email that you recieve instead of reporting as junk.

Block a sender in Outlook Client

When you no longer want to see messages from someone, you can block a sender.

  • Right-click a message from the sender you want to block, and then click Junk > Block Sender.
Block Sender command in the message list

The blocked person can still send you mail, but if anything from his or her email address makes it to your email account, it’s immediately moved to the Junk Email folder. Future messages from this sender will go to your Junk Email folder or End-User Quarantine if enabled by your administrator.

It’s a good idea to periodically review email messages identified as junk to make sure you’re not missing important messages.

Block Sender in Outlook Web

  1. Select SettingsSettings button > View all Outlook settings.
  2. Select Mail > Junk email.A screenshot of the Settings menu with Junk email selected
  3. If you want to block an email address, 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.A screenshot of the blocked senders box
  4. Select Save.

Office 365 – Release Email from Quarantine

Office 365 email has filters in place to protect users from spam and malicious email like phishing scams. 

Messages caught by the filters are placed in quarantine for your and MAHEC’s protection.  Users will receive a Spam Notification message once a day, notifying them of any messages that have been placed in quarantine. Any legitimate mail caught by mistake can be released directly from this message or from the quarantine portal (see details below).

Mail left in quarantine will automatically be deleted after 15 days.

Handling Quarantined Email

Legitimate  messages placed in quarantine may be released into your inbox one of two ways:

Users can check the quarantine portal anytime or whenever they are missing expected email.

From the spam notification message:

If you receive mail that has been placed in quarantine you’ll receive a message like that shown in image below.  The following options will be available to you by clicking the respective links in the message or you can choose to do nothing.

  • Release to Inbox – message is removed from quarantine and placed in your inbox.
  • Report as Not Junk – Microsoft is sent a copy of message to be analyzed.  Doing this tells Microsoft that the message isn’t junk however, it does not guarantee that the message will not be placed in quarantine the next time it is received.
  • Do nothing – message is left in quarantine and deleted automatically after 15 days.

From the Office 365 Security & Compliance Center:

Quarantined email can also be handled in the Office 365 Security & Compliance Center.

  1. Go to https://protection.office.com/#/quarantine.  
  2. Click Threat management  and then click Review.
  3. Click Quarantine (any where in the box).
    A list of your emails in quarantine are displayed.
  4. Click any message to select it, then choose from the options given:
    • Release message – message is removed from quarantine and placed in your inbox.
    • View message header – Choose this link to see the message header text.
    • Preview message – Shows a preview of the message with all links disabled.
    • Download message – Downloads a copy of the email in a .eml format which can be opened by Outlook.
    • Remove from quarantine – After you click Yes in the warning that appears, the message is immediately deleted.

Report Phishing or Junk

What’s Junk email?

Junk email messages are typically referred to as spam. These are messages that you don’t want to receive that may be advertising products you don’t use or find offensive. If you choose the Junk option, a copy of the message may be sent to Microsoft to help update our spam filters, and the message will be moved from your Inbox to your Junk Email folder. 

What’s phishing?

Phishing is the practice of luring you into disclosing personal information, such as bank account numbers and passwords. Often phishing messages look legitimate, but have deceptive links that actually open fake websites. If you select Phishing, a copy of your message may be sent to Microsoft to help update our filters, and the message will be moved from your Inbox to your Junk Email folder. 

Report a message in Outlook Client

If you choose the Report Message button on the ribbon, you’ll see several different options; 

  • Junk
  • Phishing
  • Not Junk


If you choose Junk, Phishing, or Not Junk, you’ll have the option to send a copy of the message to Microsoft, along with your classification of the message. This is optional, but helps Microsoft and MAHEC Administrators to block or allow these types of 

Report spam and phishing messages in Outlook on the web

  • For messages in the Inbox or any other email folder except Junk Email, use either of the following methods to report spam and phishing messages:

    Select the message, click Junk on the toolbar, and then select Junk or Phishing.
Report junk or phishing email from the ribbon
  • Select one or more messages, right-click, and then select Mark as junk.
  • In the dialog that appears, click Report. If you change your mind, click Don’t Report.
Report as junk dialog
Report as phishing dialog
  • The selected messages will be sent to Microsoft for analysis. To confirm that the messages have been submitted, open your Sent Items folder to view the submitted messages.