Ciprian Craciun

This plugin disable plugins, themes and core updates for WordPress and also the notifications.
It’s very important that you keep your WordPress theme, core and plugins up to date. If you don’t, your blog or website could 
be susceptible to security vulnerabilities or performance issues.
If you use this plugin, make sure you keep yourself up to date with new releases of your active WordPress version, plugins 
and themes and update them as new versions are released (simply by deactivating this plugin for a short time).

Disable Plugins, Themes and Core Updates

This plugin disable plugins, themes and core updates for WordPress and also the notifications.

Irshad A.Khan

SUC (services updates for customers) is a plugin which auto update the subscriber for service updates through email. The customer first subscribe for your services and then he/she should be notify if admin post new comments on any service. 
you can check the <a href="http://demo.cybersourcepk.com" rel="nofollow ugc">Demo here </a>
Features:
<h4>WordPress Integration</h4>
<ul>
<li>Easy to install WordPress plugin</li>
<li>Works with any standards compliant WordPress theme</li>
<li>Plays well with other Plugins</li>
<li>100% Customizable =</li>
<li>Easy to modify templates</li>
</ul>

Services updates for customers

suc (services updates for customers) is a plugin which auto update the subscriber for service updates.

Disable Plugins, Themes and Core Updates vs Services updates for customers