There are practically no diagnostics for this function, but you can check a couple of ways...
- Is the From address that you entered in M1XEP setup actually valid? -- e.g., correct syntax, matching the email account, etc.?
- Separately, verify what happens when you send email directly (without Elk) from the email account -- what is the From address, is it present, etc.?
You can't change the message subject, as far as I know.