You can find the nomail flag in the LWA. TSO General Info indicates the LWA would be formatted by the IPCS VERBX TSODATA command, but I don't see it there. ASXBLWA (offset +14x) points to the LWA. ASCBASXB (offset +6Cx) points to the ASXB.
You can use the LOGON command from a TSO prompt screen to set the mail/nomail option: LOGON userid MAIL ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html

