my understanding is resim is an image. fotoğraf is a photograph.

While an image can be a photograph not all images are photographs. You will notice Google uses the term images to describe their photo search because everything is that is an image is not a photograph. Your example is a photograph. But as far as email is concerned the picture could just as well be this So the specific photograph is not really the appropriate wording.

Ok. then it makes more sense to say visual. visual can include both formal and photographic. My goal is to be the only support. I'm not trying to find fault. I wish you good work.