With an Iphone I can choose to resize them during the email process andapparently an Android phone can do the same. I assume you are transferring you pictures to a PC or MAC and then doing your report.
I found this:
In the Camera app, tap the gear icon at the top of the screen to open your camera settings. Select the "Image Resolution" option. Select the resolution that will optimize your image for the emails you will send. For example, if you wish to send smaller images via email, select the "Small" resolution.