Please add WPMU DEV Smush to services
https://premium.wpmudev.org/project/wp-smush-pro/ and https://wordpress.org/plugins/wp-smushit/ WPMU DEV Smush is one of the largest WP plugins with over +1 million downloads. It resizes, optimizes, optimises and compresses all of your images by processing the images at WPMU DEVs server. So there is a data processing process transfer between the origin http server the smush image server
We are sorry for the delay in answering, due to a reorganisation of our forum. However, we are pleased to inform you that Smush has indeed been added, along with Hummingbird and WPMUDEV (Hosted).