Boone Gorges

If you install BuddyPress on an already thriving WordPress installation, you’ll notice that existing blog comments and posts are not inserted into the activity stream. This plugin fixes that.
Requires WordPress Multisite

BP Import Blog Activity

Updates BuddyPress activity streams with missing blog comments and posts

Danny van Kooten

ibericode

Harish Chouhan

This plugin shows your Mailchimp lists activity, right in your WordPress dashboard.
<h4>Mailchimp lists activity</h4>
Once activated, it will show a new dashboard widget containing a bar-graph or line-graph (<a href="https://wordpress.org/plugins/mc4wp-activity/screenshots/">screenshots</a>) showing day-to-day changes to your Mailchimp lists. You can choose to view relative activity (daily subscribes vs. unsubscribes) or a line graph visualizing your total list sizes.
Requirements
This plugin has the following requirements.
<ul>
<li>The <a href="https://wordpress.org/plugins/mailchimp-for-wp/">Mailchimp for WordPress</a> plugin (3.0 or higher).</li>
<li>PHP 5.3 or higher.</li>
</ul>
To get started with the plugin, please have a look at the <a href="https://wordpress.org/plugins/mc4wp-activity/installation/">installation guide</a>.

MC4WP: Mailchimp Activity

Disclaimer: I'm the plugin author.
We've been using this plugin internally for quite a few months now to show MailChimp list sizes right in our WordPress dashboard so we didn't have to log into our MailChimp account every now and then to monitor list related activity. 
So yes, we use it on a daily basis and love it. Now we decided to share it with you, for free. :)



Handy for a quick overview of MailChimp list activity.

Very handy executive summary of your Mailchimp list anayltics right in the dashboard. Thanks!



Featured on iThemes Training Plugin Roundup, March 2016

Shows activity for your Mailchimp lists, right in your WordPress dashboard.

BP Import Blog Activity vs MC4WP: Mailchimp Activity