One part of my business makes custom decals and I need to have a way for my customers to upload their images to me when purchasing decals. Any ideas? The area they would access to order and upload will be password protected, they need to be an established customer. My procedure now is that when the order is placed, a confirmation email is sent, They are instructed to reply to the email and attach the image. This is only a problem when the file is larger than 20 mb. Any ideas or suggestions??

CoffeeCup Form Builder allows a single file upload. You can create page with a form on it and place that page into a password protected directory. The PW protected directory can be made using CoffeeCup Website Access Manager. The email can contain the UN and PW for access.