The email from 'firstname.lastname@example.org' is a phishing scam and you should delete it immediately. Do not click on any links in the email and you should never submit your password to an online form other than our JasperNet Single Sign-On page.
If you submitted your password to the online form, please changing your password immediately by going to start.manhattan.edu and scrolling down to the link that says "Change password", and then contact us to clean up your account.
If you are worried that your account has been compromised, please go through Google's account Security Checkup:
As always, be careful what you click!