Provided is an image sending apparatus capable of preventing that, in sending image data with additional information such as sending source information added thereto, the additional information is overlaid on a part other than a margin of the image data. The image sending apparatus is provided with an image display portion for displaying a preview of image data and is capable of sending the image data with additional information added thereto. The image sending apparatus is provided with a display control portion for displaying information showing an adding position at which the additional information is added to the image data subjected to a preview display on the image display portion in the preview display.