The OPC scheduler might have the ability to do this for you. You might have to set up a special mail address and have people subscribe to it using their email server.
Poor man's option would be to create a job/step that sends the email using SMTP protocol. The general form of the job will be, some utility to read in a small data set containing SMTP statements, and writing out those statements to a writer that forwards them to an SMTP server. The research for that would be to scan your jcl/proc/parm libraries for the words 'SMTP' or 'HELO'.
Because you said 'abend' I can't really figure out how to run a step after a job abends. That's why it's probably better to use the scheduler. Worst case, you could write separate jobs for the emails, then tell the scheduler to run it/them depending on what happens.
I cobbled together something horrible once that ran a test schedule every few minutes. The first job would check the status of jobs in the prod scheduler and set a return code. based on that code, it would run one of several jobs sending me a generic email.