A knowledge base article about How do I change the way bMail/email displays my name? provided by the UC Berkeley IT Service Hub - Knowledge Portal
Google email displays with Display Name, example: John Smith
If your name does not appear how you want it to display, you need to update your Lived Name in UCPath or Cal Central. See: https://diversity.berkeley.edu/thriving-initiatives/gender-recognition-and-lived-name-policy/managing-your-name-and-data for instructions.