Ok, I set up a test user and the only action I could cause to give me a custom message to the user was “Revise”. I’m waiting to hear from @BethL to see if that matches what they remember.
I did go ahead and try “Revise”. That let me send a custom message to the test user. The test user recieved a PM from the system user, but when I go into the system user’s inbox/sent mail there is nothing at all. I can share screen shots of that if it is helpful.
One thing to note, we have disabled replying to system messages (and in my test, the test user has no option to reply). But that shouldn’t keep the message out of the system inbox, should it?
And under /u/system/preferences/users

