Recently I had to write a thank-you email to my mentor, and in order to create something special, I stumbled upon something very interesting. I've added quick overview in this article, which might be helpful in your next job application, especially cold emails. https://medium.com/@amitbadala07/how-to-convey-your-message-effectively-with-images-a-k-a-kungfu-content-94c0965ed3c