You can watch the video below for to fix filtering issues, click Not receiving Blackboard Messages, or see steps below video for an individual removal:
You will need to check your "Spam" or "Junk" folder to see if your emails have gone there.
First, locate your "Junk E-Mail" folder and click
Locate the email(s) that are from Blackboard, then right click and you will see the following menu options:
Scroll to Junk and then you will see the following options in which you will click "Not Junk"
After you click this option, ONLY this email will return to the inbox, but all FUTURE emails from this sender address will go into the INBOX. If there are multiple emails that have different addresses, you must repeat the steps for each one. Previous emails that were sent to "Junk Mail" from these addresses will have to be moved one at a time or gone through and deleted.