Juergen Schulze

A plugin for wordpress which allows you to send an email to the registered blog users. Users can send personal emails to each other. Power users can email groups of users and even notify group of users of posts.
With ability to schedule mails of the newest post in digest form.
! ! ! S T I L L B E T A ! ! !
All the instructions for installation, the support forums, a FAQ, etc. can be found on the <a href="http://1manfactory.com/emu2" rel="nofollow ugc">plugin home page</a>.
This plugin is available under the GPL license, which means that it’s free. But a “thank you” on my blog is highly apprechiated.
Check out my other <a href="https://wordpress.org/extend/plugins/profile/1manfactory" rel="ugc">WordPress Plugins</a>
<h3>Remove plugin</h3>
<ol>
<li>Deactivate plugin through the ‘Plugins’ menu in WordPress</li>
<li>Delete plugin through the ‘Plugins’ menu in WordPress</li>
</ol>
It’s best to use the build in delete function of wordpress. That way all the stored data will be removed and no orphaned data will stay.
<h3>To do</h3>
More translations. Does someone wants to help?

Emu2 – Email Users 2

Send email to users, manually or on schedule (digest of newest posts).  Users can send emails to each other. Export function included. STILL BETA!!!

Rafal Toborek

This plugin is currently in alpha stage. It includes only basic features like sending e-mail notifications using built-in PHP mail() function or by using external SMTP server (recommended). Work of this plugin depends mostly on the SMTP server configuration.
Lemme Know plugin allows you to send e-mail notifications only for a small amount of subscribers. There are plans to implement Cron-based solution which will allows to send notifications in chunks and omit server limitations.

Lemme Know

Sends e-mail notification for all subscribers when a new post is published.

Emu2 – Email Users 2 vs Lemme Know