4.1. Mark as SPAM
If you have received an e-mail that is SPAM, or a suspected phishing attempt, please immediately mark the email as SPAM. To do this you will need to select the email from your inbox and choose the mark as spam button, pictured below, located next to the archive and delete options. This will remove the email from your inbox, and help Gmail learn to block similar emails in the future.
Reply to the email
Click on any links in the email
Download/Open any attachments
Provide any credentials (username/password) or account information