Josh Eaton

Give your bbPress forum users the ability to report inappropriate content or spam in topics or replies. This plugin adds a “report” admin link to topics and replies, when clicked, the topic/reply is assigned a post status of “User Reported”.
All logged-in users can report content and see that a topic has been reported, only Moderators and up can un-report the content. Integrates with the standard Topic admin screens.
When a topic is reported, a banner is shown at the top of the page indicating that the topic has been reported as inappropriate. For replies, a message is added within the reply, before the content.
Requires bbPress 2.4+.
<h4>Translators</h4>
bbPress – Report Content is fully internationalized and ready for translation:
The following translations are currently available:
<ul>
<li>Croatian (hr) – Sanjin Barac</li>
<li>Finnish (fi) – <a href="https://github.com/MarkoKaartinen" rel="nofollow ugc">Marko Kaartinen</a></li>
<li>French (fr_FR) – <a href="http://technocyclope.com/" rel="nofollow ugc">Matthieu Durocher</a></li>
<li>German (de_DE) – <a href="http://www.thunderbird-mail.de/" rel="nofollow ugc">Alexander Ihrig</a></li>
<li>Italian (it_IT) – Barbara Lerici</li>
<li>Polish (pl_PL) – Paulina</li>
<li>Spanish (es_ES) – <a href="http://www.webhostinghub.com/" rel="nofollow ugc">Andrew Kurtis – WebHostingHub</a></li>
</ul>
New language packs, or updates to existing ones, can be sent via GitHub or by <a href="http://www.josheaton.org/contact/" rel="nofollow ugc">contacting me</a>.
<h4>Developers</h4>
Active development happens on Github: <a href="https://github.com/jjeaton/bbpress-report-content" rel="nofollow ugc">https://github.com/jjeaton/bbpress-report-content</a>. PRs welcome!

bbPress – Report Content

Give your bbPress forum users the ability to report inappropriate content or spam in topics or replies.

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.

bbPress – Report Content vs Reply By Email