html5 banners for external sites

Hi there, I regularly create web banners to appear on external sites. Either animated or static gifs. I used to use flash so am ok with using animate. I've created quite a few animations with it, but come unstuck after exporting. I apologise if this has been asked before, and if anyone can point me in the direction of previous posts, or anywhere that can provide answers I would very much appreciate it. But what I'm after, is, what do I do with the html and js files once exported? js files can't be sent over email, so I'm not sure what I have to do with them?? Do I need to make any changes to the html file, or is this just sent over as is??? again I apologise if this has been asked before, but I can't find anything to explain. TIA