I just add another "download" button to download it directly.
Just unzip the file and double click html file.

By the way, I think our server was removed from SPAM list.
I hope mail server will be available for you now.

About list of the simulations you have create, I will try to add that later.
The builder was written several years ago. Now the javascript is much advanced.
So it is possible to create better interface.
If there are many users really interested in simulation builder, I will try to find time to re-write the interface.