They are cloud based so seamless sharing between myself and others in the office is a breeze. They support multi-language as well which is beneficial for bigger companies like ours for international projects. You can also convert HTML code to a direct URL for an easy way of universally sharing, no matter what product the other user is using. The editing features are completely custom and you have a lot of functionality within the editing tools in regards to custom signatures, headers and footers, and everything in between.