I use the Subscribe to Comments reloaded-plugin. When someone has a comment on my post, and someone else has a comment on this post or on the other comment, the people who have a comment on my post, receive an e-mail.
So when someone responds to someone else, the someone else-person gets an e-mail that someone has responded. Then they can get in contact.
But in the e-mail of Subscribe to Comments reloaded are only the name and the comment. The e-mail of the person who has responded to the other person isn't in there, so they cannot get in contact, because he doesn't know the e-mail of the person.
Is there a plugin where it is possible to automatically send the e-mail of the person who has commented? I don't think it is possible in the Subscribe to Comments reloaded-plugin