To have pictures of high resolutions, means pictures of big sizes therefore it is not the most practical to send by mail.
TinyPic is a tool especially conceived to make easier send it of photographs of big sizes by mail. He allows to compress a picture in 1/20 without losing therefore in quality. As a result instead of sending the single picture, you will be able to send a hundred at the same time.
The use of TinyPic is of as much as simple, as it is enough to move pictures to be changed on the interface of program and compression will be made.