Convert a Template to a Website

Hi really simple one, I need to have an email signature written up as html code. I want to be able to use Mac OS El Capitan Mac Mail for this signature. I am also happy to host the images for the signature myself on a public dropbox folder. I will need the completed code (I can change the image links myself) so that I can then save this into mac mail (I would like to be able to read the html code in a html editor so I can play around with it if necessary. Image files are attached including the actual images that I need to save into the html code.