I'm using MediaPlugin. I've never had a problem but today.
The user can take a picture and send it via email.
If the user is in the camera and retakes a photo (ones or multiple times), iOS and Android create a new picture with the same name +"_" and a number. When I add the path of the original images, in the email all images are attached.
For example, the image has name "pippo". In the filesystem I found "pippo_1", "pippo_2", I add in the email only "pippo" but there are three attachments.