It should be possible to answer posts from your community by mail, the same way you can answer to tickets from your mail
We have internal discussion, how this can affect on the SPAM issues. Please clarify that need this feature for a support agents or users or both?
It is primarily for support agents.
Do you have a status on this one?
This feature now has Under review status, so we working regarding our internal roadmap.
If it will have more votes it will be implemented in the near future.