Images Not Showing Up When I Load My Html To My Email Signature

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HTML

email

signature

I have been going crazy trying to figure this out, and I am not that great at coding, considering I've only done it back when I was in high school. I have created an Email signature for my company, and I did it on photoshop. It was all good until the format needed to be changed around and my boss wanted the text to be on the image..... therefore changing the whole aspect of the project. this meant I had to do some coding, and use an HTML instead of just an image. so i went and created slices on the photoshop image, and linked the text to the website, email, etc. I then exported it as an html and I have all the files stored in a folder called images which is what its called in my coding. I then have the html file below it on my desktop. when i click it, and load into the browser it works perfectly fine, loads up and all the link work perfectly, but then when i go to put it into my gmail or imail signature it wont load anything, they are just blank boxes with question marks but the link still work. ive spent all day trying to figure this out. i need help! how can i fix this and make it work in my email signature!