Hello JasonLLM,
if the problem is still relevant (?):
of course you can send attachments. SDM has an official Interface.
Look for "notification method and write to file" in the documentation.
You need a SMTP program with command line interface that can send the attachments (such as BLAT).
But there are also others, depending on the operating system.
Perl skills are important. It is relatively easy to implement, requires only some time.
You can customize each outgoing mail, also do not send.
You will receive the email in your Perl program, attach your file via SMTP program and send the mail to the recipient of the notification.
I've also used the method to translate the ticket headlines in the language of the end user.
Regards