Please note the recall function only works on the following conditions:

1. The recipient must use Outlook app
2. The message does not contain any sensitivity label
3. The recipient must be in the same Exchange domain.  So, a staff sending a message to student cannot recall.  A staff sending to a mailing list of recipients cannot recall.

To recall a message, please follow Microsoft's guide below:

• Recall or replace an email message that you sent

Upon you choose to tell you the recall action, you will receive an email from your recalled recipient to indicate the recall result.