easy way. go into gallery, then find the photo you want to send. while viewing it hit the share key, select the email program you want to use. on mine it says outlook, gmail,yahoo etc. I select it my email program opens and I address to whom I want to have it. I then click send and its gone.
Now sometimes the photo is too high in file size. some email programs or providers will not allow any attachment over 20mb or less. You ten lower the resolution of the photo and try sending again.