Notify with email (send mail with image)

Hi

i try to send an email with a picture
how can i do that ?
all the lines below don’t work

 self.call_service("notify/email", title = "someone", message = "Hello World",data={"image":"/local/snapshots/camera.jpg"})
     self.call_service("notify/email", title = "someone", message = "Hello World",data={"image":"/config/www/snapshots/camera.jpg"})
     self.call_service("notify/email", title = "someone", message = "Hello World",data={"filename":"/local/snapshots/camera.jpg"})
     self.call_service("notify/email", title = "someone", message = "Hello World",data={"filename":"/config/www/snapshots/camera.jpg"})

thx

This more useful way?