replyPUSH

Much like WordPress.com’s “Comment Reply via Email”, you can reply to any post you subscribe to.
Integrates with the wonderful <a href="https://wordpress.org/plugins/subscribe2/" title="subscribe2" rel="ugc">subscribe2</a> and <a href="http://replypush.com" title="replyPUSH.com" rel="nofollow ugc">replyPUSH.com</a> service to provide the email reply magic.
It automatically adds notifications for comment posts to keep the conversation flowing 🙂
All the subscriber need do, is reply at the top of their quoted email notification.

Reply By Email

Allows your users to reply to articles / blog posts and comments via email.

Josh Eaton

Lets the admin add “featured” or “buried” css class to selected bbPress replies. Handy to highlight notable replies or bury “Thanks/me too” and other useless responses. The plugin also gives the user that started the topic the capability to choose featured/buried replies. Also includes a widget for showing recently featured replies.
This plugin is based on <a href="https://wordpress.org/plugins/feature-comments/" rel="ugc">Featured Comments</a> by Pippin Williamson.
Please report bugs and suggestions on <a href="https://github.com/jjeaton/bbpress-featured-replies" rel="nofollow ugc">Github</a>.
Thanks to <a href="http://css-tricks.com/" rel="nofollow ugc">Chris Coyier</a> for the concept and for funding development.

bbPress – Featured Replies

Lets the admin add "featured" or "buried" css class to selected bbPress replies.

Reply By Email vs bbPress – Featured Replies