You can access your University email through the Student Intranet by clicking on the envelope icon in the top right of the screen.

https://intranet.cardiff.ac.uk/students

You can also access your University email on your mobile device.

https://intranet.cardiff.ac.uk/students/support-and-services/technical-help-and-support/email-office-365/set-up-and-access/mobile-access