How to change your McMaster E-mail password

To perform these steps you must know your current password.  If you have forgotten your password or think your McMaster email account has been compromised and cannot log in, please contact CSU immediately for help by calling 905-525-9140 xATCSU (28278) or by emailing
Click on the steps below to see detailed instructions and screenshots.

1. Go to your webmail ( or
2. Log in with your current password
3. Go to 'Options' in the upper right and choose 'See All Options'
4. Select 'Change Your Password'
5. Create a new password