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Illinois State University

Using Block Sender Functions in Office 365

User’s can block people or domains so their messages no longer show up in the users Inbox.

When a user or domain is listed as a blocked sender, any messages sent to the user from the blocked sender will be routed directly to the user’s Junk Email folder.

How to Add a Blocked Sender

To add a person or domain to your Office 365 Blocked senders list:

  1. Sign in to Outlook on the web via the Office365.IllinoisState.edu website.
  2. At the top of the page, click the [Settings] ( ) icon, and then click [Mail].
  3. Find the Account section in the navigation pane on the left, and then click [Block or allow].
  4. To add an entry to “Blocked senders”, enter the email address or domain that you want to block in the Enter a sender or domain here text box, and then press [Enter] or select the [Add] icon () next to the text box.
  5. Click the [Save] button to save the changes.

How to Remove a Blocked Sender or Domain

To remove an entry from your Blocked senders list:

  1. Sign in to Outlook on the web via the Office365.IllinoisState.edu website.
  2. At the top of the page, click the [Settings] ( ) icon, and then click [Mail].
  3. Find the Account section in the navigation pane on the left, and then click [Block or allow].
  4. To remove an entry to “Blocked senders”, select the entry you wish to unblock and select the [Remove] () icon.
  5. Click the [Save] button to save the changes.

How to Edit a Blocked Sender

To edit a blocked sender:

  1. Sign in to Outlook on the web via the Office365.IllinoisState.edu website.
  2. At the top of the page, click the [Settings] ( ) icon, and then click [Mail].
  3. Find the Account section in the navigation pane on the left, and then click [Block or allow].
  4. To edit an entry to “Blocked senders”, select the entry you wish to change and select the [Edit] () icon.
  5. Enter any corrections or changes, and then click the [Save] button.

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