Andon Ivanov

With this plugin you can disable or delete all approved, pending or spam comments and pings only with one click.

AI Disable Comments

A quick way to disable or delete all approved, pending or spam comments and pings only with one click.

Fresh-Media

In previous versions of WooCommerce, when an order status changed from pending to cancelled, an email notification was sent automatically. 
In WooCommerce 3.0.8, however, they’ve removed this (see <a href="https://github.com/woocommerce/woocommerce/blob/master/CHANGELOG.txt" rel="nofollow ugc">changelog</a>).
This (very) simple plugin brings back this email.
Thanks to @lomars for the code he shared on <a href="https://stackoverflow.com/questions/45732404/send-an-email-notification-when-order-status-change-from-pending-to-cancelled" rel="nofollow ugc">this</a> Stack Overflow question.

WooCommerce Order Pending To Cancelled Email

A really useful plugin althougth it is a really simple one.

A lot of poetry in so few lines of code!

Thank you

As simple as useful

Brings back the email notification when an order status changes from pending to cancelled.

AI Disable Comments vs WooCommerce Order Pending To Cancelled Email