Mail email signature with logo

I'm on an iMac SSD 1T running Yosemite and I want to create email signatures with my business logo that will not appear as a JPEG or PDF and open in a delayed fashion. How can I accomplish this? I've looked in the App store for Mac and iOS, and the offerings are dismal, with poor ratings. I'm not a coder, but is there a way to create the signature in Pages and save as HTML? I need to run Yosemite for now as several pieces of my business software won't run on El Capitan (I had to wipe the mac and reinstall Yosemite just a month ago.)

Thanks for any assistance!