Hi,
It appear to be a plugin-feature, and can be done: http://www.antoniorinaldi.it/a-comment-reply-by-email-solution-for-a-self-hosted-wordpress-blog
This looks great for someone like you who wants to reply via email (and like me too) but when a lot of people have auto-replies on, it doesn’t seem like a good idea. Just my thoughts. 🙂
(@pbc01)
7 years, 9 months ago
When an author answers the email to the person who submitted a comment on their page the email reply will automatically appear as a comment reply on the page.
This would be awesome!