Brandon Allen

<blockquote>
<p>This plugin requires both bbPress 2.5+ and BuddyPress 2.5+.</p>
</blockquote>
<p>Send bbPress forum and topic subscription emails using Buddypress’ email API. Now you have pretty, customizable, HTML emails for your forums.</p>
<p>Note that BP Emails for BBP sends emails differently than bbPress. bbPress places every subscriber email in the BCC field, and sends one email. BP Emails for BBP, asynchronously, sends one email per subscriber. This may help improve email deliverability if you have forums or topics with a large number of subscribers. Email providers don’t always look favorably on emails with large BCC fields. At the very least, this should improve page load time when posting a new topic or reply.</p>


BP Emails for BBP

I tested this plugin and it works just like the BuddyPress emails. Makes it easy to customize emails across both plugins so that all communication from the site is branded.



Works as advertised

Send bbPress forum and topic subscription emails using Buddypress' email API.

Ismail

<p>bbPress Messages – Simple yet powerful private messaging system tailored for bbPress.</p>
<h3>What’s New in 2.0?</h3>
<h4>Fully Optimized</h4>
<p>Now bbPress Messages loads faster due to optimization and messages caching.</p>
<h4>Background Schedules</h4>
<p>For better experience and load time, now the tasks are processed in the background. Tasks that would take some time to finish such as email notifications, after send events, cleanup schedules and others.</p>
<h4>Translation ready</h4>
<p>Now you can use the languages files to <a href="https://codex.wordpress.org/I18n_for_WordPress_Developers" rel="nofollow ugc">translate</a> bbPress Messages to your language. You can also contribute your translations and <a href="https://translate.wordpress.org/projects/wp-plugins/bbp-messages" rel="nofollow ugc">help translate this plugin</a>.</p>
<h4>Shortcodes</h4>
<p>We’ve added couple shortcodes and rewrote older shortcodes, you can find out about shortcodes in the shortcodes tab in the settings page.</p>
<h4>Widgets</h4>
<p>We’ve redesigned the widgets for 2.0! Navigate to your dashboard and search for bbPM widgets now.</p>
<p>Other than that, bbPress Messages 2.0 is easy to extend, supports multisite installations, and we will be working on some free addons to extend its features and improve more. Please consult the project Github page <a href="https://github.com/elhardoum/bbp-messages" rel="nofollow ugc">https://github.com/elhardoum/bbp-messages</a> to report a bug, contribute to the project or make suggestions.</p>
<p>If this is the first time you update, you should be migrating your older messages from the legacy database table to the new one. This could be done using the import tab in settings.</p>
<p>We will cover some free and premium addons to power group chats and other features, sign up for the newsletter to get notified.</p>
<p><em>More documentation coming soon..</em></p>
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bbPress Messages

Giving myself a review..
Works perfect, simple code, clean design, you can use this plugin with or without BuddyPress with no issues or conflicts.



simple and working

Works Fine but the text is written in hard. No translation possible. Not usable in my lang ! Too bad.

Front-end-pm is a very good alternative.

Translation impossible

I could customize the plugin via filters etc. Works good, so go ahead and install it. 
We translated the plugin ourself via PoEdit and we want to give that back.

Does what it says and very happy with it as a developer

bbPress Messages - Simple yet powerful private messaging system tailored for bbPress.

BP Emails for BBP vs bbPress Messages