Email providers typically limit the amount of data a single message can contain. For this reason, attempting to email a large image file may result in an error. The solution is to resize the image to a smaller size, thereby reducing the data footprint of the email. Here are a few image resizing tweaks that can help you quickly edit the size of a photo for email.
How to Compress Photos for Email
Image Resizer for Windows is available as a free download. To reduce the size of a large image using the application in Windows:
Download and install Image Resizer for Windows.
Right-click on one or more image files on your computer.