Blackboard does not keep track of any email that you send through the system; it does send a copy of your email to your student.gwinnetttech.edu account, however, so you should have a copy of that email in your inbox. Any responses to your email will go to your GTC account as well.
When sending a message through Blackboard, it is always good to have a record of sending the email. In order to do this, you would
Step 1: Click on the "Email" link in Blackboard
Step 2: Click on the option you would like.
Step 3: Create the email
Step 4: Make sure that you have selected "A copy of this email will be sent to the sender Return Receipt" (This means that you will receive a confirmation email in your Gwinnett Tech email showing the email sent.)
Step 5: Click "Submit"
This will give you a copy so that you have proof that you sent the email or if you need to refer back to it you can.
Note: Students cannot recall emails sent from within Blackboard. This feature is not available.