Using this as example if you had MID 7015, 7015a
Chrome Browser (required)
Chrome extension called Mailto: for Gmail™ 2.4 (required)
Just have to fill out the order form after first send in paypal. Then use my order form I've created will appear on gmail.com reply message your transaction ID. No. All you do after that is send the email to me.
Also required is @gmail.com and box.com access. This is the way secured what I do since 2012. Can't use any other email. I monitor all transactions to and from.
You will get an invite to the files to download them. This way you can't never say you didn't get your files. I'll know if you have or not.