Do you think one image will convey your message more effectively than 50 words?
Well, certainly not, at least as far as email marketing is concerned because your email message containing only an image might be categorized as spam by leading search engines.
So, what’s the key to this little scenario? Balance. You need to balance out every single email. Instead of featuring a large image and a small amount of text in your email or newsletter, give each element adequte proportion. A large image in your emails, with an equal amount of text, will work. But never let your images dominate your email as doing so will bring you bounce rates like you would not believe.