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.

Pippin Williamson

Stephen Edgar

A simple bbPress extension to customize the email sent to forum & topic subscribers when a new topic or reply is posted.
Once activated, you will have two new options in Settings > Forums that will let you configure the email and subject to your liking.

bbPress Custom Reply Notifications

A simple bbPress extension to customize the email sent to forum & topic subscribers when a new topic or reply is posted.

Reply By Email vs bbPress Custom Reply Notifications