DjZoNe

<p>This plugins main goal was to provide the ability to any of your registered users, to invite more people to the community.</p>
<p>Please notice, that this plugin totaly ignores whether the registration is enabled or disabled to your blog.</p>
<p><strong><a href="https://downloads.wordpress.org/plugin/invite-friends.0.3.zip" rel="nofollow ugc">Download now!</a></strong></p>
<p><a href="http://invite-friends.dev.rain.hu/" rel="nofollow ugc">Support</a> |<br />
<a href="http://invite-friends.dev.rain.hu/faq/" rel="nofollow ugc">FAQ</a> |<br />
<a href="http://djz.hu" rel="nofollow ugc">Author</a><br />
<a href="https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=djzone@cracker.hu&item_name=Invite%20Friends%20for%20Wordpress" rel="nofollow ugc">Donate</a></p>
<p>Some functions:</p>
<ul>
<li>invitation sending</li>
<li>invitation cards limit per site</li>
<li>after activation, the user is logged in automatically</li>
<li>after activation, the user can be redirected to a custom URL</li>
<li>activation screen is using the same styles as the login screen (if you have customized login screen it will affect the activation screen as well)</li>
<li>Dashboard for custom settings Plugins > Invite friends settings</li>
<li>i18n support (localized messages)</li>
</ul>


Invite Friends

This plugin give the ability to anyone how registered to your blog, to invite more people, even if the registration is closed.

SubMe

<p>SubMe provides a simple subscription management and email notification system for WordPress blogs that sends plain text email notifications to a list of subscribers when you publish a new post. SubMe allows you to send out email bursts by using the WordPress cron functionality. Its purpose is to provide a simple notification system that works and is secure. Its purpose is not to be the most feature rich plugin.</p>
<h4>Features</h4>
<ul>
<li>Email verification.</li>
<li>Subscription widget.</li>
<li>Customize email templates.</li>
<li>Custom CSS</li>
<li>Subscribers management.</li>
<li>Users can manage their subscription.</li>
<li>Delegate admin settings to different users.</li>
<li>Admin Notification of new subscriber.</li>
<li>Rate limit subscriptions from the same IP address.</li>
<li>Cron functionality for sending out emails in bursts.</li>
<li>Export subscribers in CSV format.</li>
<li>Import subscribers from CSV.</li>
</ul>
<h4>Language Support</h4>
<ul>
<li>English</li>
<li>Dutch (nl_NL)</li>
</ul>


SubMe notifies subscribers by email when a new post has been published.

Invite Friends vs SubMe