If you're unsure if an email is spam or not, use the Phish Alert button to have IT examine it. If you know an email is spam and you did not engage with it do not use the Phish Alert button, use block sender.
How to use Phish Alert
On Computer On Phone
How to Block Sender
On Computer On Phone
Right click on Email > Junk > Block Sender. Tap "..." in the right of the email > "Report Junk"