Ismail

<p>Does the same functionality as BuddyPress, emailing users who get mentioned in a bbPress topic or reply. The aim of this plugin is when to enable that feature when no BuddyPress is there.<br />
To do: – warn user about bbPress/BuddyPress presence</p>


bbPress Mentions Email Notifications

Adds the @mentions to bbpress - really useful

Great plugin

Email bbPress topic/reply mentioned users, set custom email and some basic settings

Benaceur

<p>This plugin allows you to Restrict a particular or certain username, email addresses or symbols,<br />
or email from specific domain names in the form registration when registering for your site<br />
and you can allow to use a certain language (arabic cyrillic latin …)<br />
or all languages and characters and symbols, you can also control and modify all errors messages<br />
and allow certain characters (Symbols and characters accented as é û),<br />
and allowing you to change the author slug (defaults to the username of the author),<br />
and you can control and adjust all settings from the plugin settings page in admin Panel.</p>
<h4>and here is all plugin settings in admin Panel:</h4>
<ul>
<li>enable/disable the plugin</li>
<li>disallow to use the spaces in username</li>
<li>disallow to use only numbers in username</li>
<li>disallow all characters (Symbols) in username</li>
<li>disallow characters (Symbols) permitted by wordpress in username: @ – . _</li>
<li>allow certain characters (Symbols and characters accented as é û)</li>
<li>restrict certain email addresses</li>
<li>restrict certain username</li>
<li>restrict certain domain names for example: yournamesite@com</li>
<li>No/yes uppercase in username</li>
<li>Compatible with single site, network (multi-site), buddypress and buddyboss.</li>
<li>The possibility to:</li>
<li>choose language (characters) in username (arabic cyrillic latin …) or all languages</li>
<li>remove all settings and data of the plugin from database when the plugin is disabled</li>
<li>reset default settings</li>
<li>control and modify all errors messages</li>
<li>restrict any name contains a part of word (partial matching)</li>
<li>prevent the use of email in the username</li>
<li>prevent the use of numbers more than letters and symbols in the user name.</li>
<li>allowing you to change the author slug</li>
<li>Author Slug Structure</li>
<li>Update of the author’s slug for all users</li>
<li>Limit the number of users to update (in batches) with every click, if your database is big</li>
<li>Update or convert only names (author slug) not latin</li>
<li>remove name field in buddypress.</li>
<li>hide or change message (Must be at least 4 characters, letters and numbers only.) of multisite.</li>
<li>add an notice or text in registration form.</li>
<li>etc…</li>
</ul>
<h4>TRANSLATED IN FOLLOWING LANGUAGES:</h4>
<ul>
<li>Arabic</li>
<li>English</li>
</ul>
<h4>Direct support page:</h4>
<p>https://benaceur-php.com/?p=2268</p>


Restrict Usernames Emails Characters

Restrict the usernames, email addresses, characters and symbols or email from specific domain names or language in registration ...

bbPress Mentions Email Notifications vs Restrict Usernames Emails Characters