Image transmission apparatus and control method

An image transmission apparatus capable of carrying out efficient image processing and transmission as a whole even where multiple image transmission requests exist, without increasing the complexity of the apparatus construction. The image transmission apparatus is provided with multiple task processors that are respectively responsible for executing one or more of the image processing operations, a designating unit that designates the image processing operation(s) to be performed, a controller that, where multiple recipients are specified with regard to the image data and different image processing operations are specified for the different recipients, controls each task processor such that the nth operation is executed in common for the recipients for which all operations up to the nth operation are identical, and a transmission unit that transmits to the specified recipients image data that has undergone all of the image processing operations.