David Satime Wallin

BMRE Domain Monitor is built to keep an eye on the domains you add.
It checks the expiration date and warns you if a domain will expire in 30 days or less (both through email and in the admin interface)
It also has the feature (optional) to suggest domains that are similar to the ones you’ve added and that are still available.
DISCLAIMER: Do not ONLY trust this plugin for your domains. It works well but I can not be held responsible if something should go wrong and your domain does actually expire.
LICENSE:This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
<pre><code>This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. </code></pre>

BMRE Domain Monitor

This plugin is meant to monitor your domainnames and warn you before they expire.

Rebrandly

By installing this plugin and configuring it to connect with your Rebrandly account, 
you will be able to create branded links using the same domain as of your WordPress website/app.
Unlock the opportunity for your team to freely create branded links via Rebrandly, 
while still safely serving your own content from your WordPress application.
Here are a few steps necessary to use this:
<ol>
<li>Install the plugin in your WordPress</li>
<li>Connect the domain to Rebrandly as Alias Domain, and take note of the autogenerated value for the alias</li>
<li>Set the alias name in the Admin menu (Settings > Rebrandly) and Save your settings</li>
</ol>

Rebrandly Redirect

Connect your WordPress application with Rebrandly and create branded links re-using the same domain name

BMRE Domain Monitor vs Rebrandly Redirect