A knowledge base article about How do I Send As my subdomain account from within bMail? provided by the UC Berkeley IT Service Hub - Knowledge Portal
Subdomain accounts are accessible from within the normal bMail interface, with mail addressed to them [for example, hvetinari@cubmail.berkeley.edu] arriving in your @berkeley.edu inbox and being available as a Send From address.
How do I send from my subdomain email address and make it my default Send From address?
For additional assistance, contact CSS IT at 510-664-9000 and follow the prompts to reach a technician from between 8 am to 5 pm, Monday through Friday. A ticket may also be submitted through http://sharedservices.berkeley.edu/it/ or by e-mailing bconnected@berkeley.edu