Hi @Rohit Kapoor​ :

There is a new format for job emails, this can be enabled from Admin console -> Workspace settings

I think any additional information apart from above image can be appended to the error message in catch block of your program.

Another option is to implement a function to send mails, so you can customize your message and send it on success/ failure.

Hope this helps

Thanks,

RKNutalapati