Blighty

This plugin monitors installed WordPress plugins on your installation. It notifies the admin (or other email) when updates are available. Plugins can be excluded from monitoring.

Blighty Pluginator

This plugin monitors installed WordPress plugins on your installation for updates and notifies via email when they are available.

Dor Zuberi

Light and customisable WordPress plugin to integrate your site with Slack.
Choose what type of notification you would like to receive: 
* WordPress Update Available 
* Plugins Updates Available 
* Administrator Login 
* Failed Administrator Login 
* New User Registration 
* New Comments 
* Nee WooCommerce Orders 
* WooCommerce Product with Low Stock 
* And much more!
You can contribute by simple <a href="https://github.com/dorzki/Slack-Notifications" rel="nofollow ugc">Forking me on GitHub</a>.

Slack Notifications by dorzki

Thank you for this amazing plugin! Works great.

Excellent Plugin!

Get WordPress notifications to your team's Slack channel.

Blighty Pluginator vs Slack Notifications by dorzki