Documentation for integrating SVB's financial services into your own applications is available at the SVB Developer Portal .
While "cb.svb" does not match a standard public AT&T or SVB endpoint, it likely refers to a subdomain or a internal callback ( cb ) mechanism:
In developer workflows, "cb" is frequently used as shorthand for callback URLs —the addresses where an API sends notifications or data after a process (like a mail delivery or a transaction) is completed. Summary Table Primary Function Official Resource AT&T iOS Mail Personal/Business email setup on Apple devices. AT&T Support SVB API Programmatic access to banking and transfers. SVB Developer Portal "cb" Likely stands for "Commercial Banking" or "Callback." at&t ios api mail cb.svb
If you are manually configuring an email client, use the following AT&T Email Settings from MailJerry :
smtp.mail.att.net (Port 465 or 587, SSL required). AT&T Support SVB API Programmatic access to banking
You can find step-by-step instructions for your specific device on the AT&T Device Support Page . 2. SVB API (Silicon Valley Bank)
imap.mail.att.net (Port 993, SSL required). 3. Interpreting "cb.svb" and "mail cb.svb"
Following its acquisition by First Citizens Bank, many SVB operations are being rebranded, though existing API services typically remain documented for current clients. 3. Interpreting "cb.svb" and "mail cb.svb"