The thing is, not having PMs forwarded to email is not the same thing as not receiving PMs. And this suggestion seems to be assuming that it is.
A message with the underlying meaning warning, your message probably won't reach this person would be useful.
But the reality is some users barely check their emails and can be reached more reliably by PM; others use both; others might never check their inbox and use email exclusively. I swing between the three depending on how busy I am.
Giving the sender of a PM this information would be a violation of privacy - not a dangerous one, but it's still information some random stranger isn't entitled to.
no subject
A message with the underlying meaning warning, your message probably won't reach this person would be useful.
But the reality is some users barely check their emails and can be reached more reliably by PM; others use both; others might never check their inbox and use email exclusively. I swing between the three depending on how busy I am.
Giving the sender of a PM this information would be a violation of privacy - not a dangerous one, but it's still information some random stranger isn't entitled to.