Auto executable script

Hello,

I want to ask if it is possible to make a programm that will execute itself and run automaticly as soon as i download it on my computer.
I have some projects saved on e-mails so i can transfer them everytime i change place. The booring thing is to run them all one by one everytime.
Is there something i can do to make my scripts run automaticly as soon as i redownload them on a new computer? I have them attached on my e-mail, that's how i transfer them.

Cheers