Currently, Verse on-Premise does not feature a good rich text editor that could edit / resize images.
Users working in MacOS with Safari or Chrome get images which are really high in resolution, and when pasted in the browser in the Compose window, they can't resize it.
Some times they can't even send emails with such inline images because the email is 12, 15, 20, 30 Mb or more in size because they can't simply resize it.
In Gmail, for instance, you can set options like: Small, Best Fit, Original Size, and also, you can click on the corners and easily resize the image to your needs.
You can also perform similar tasks in OWA.
This enhancement should be brought to Verse on-Premise.