You can run the application you have in your computer using the email for the trigger. From anywhere you send email with Subject that already set in the rule of email client software and then when the email received, it will instruct to run the Application. To set rule for running Application using email, you have to use email client software such as Microsoft Outlook or others. I am here using Microsoft Outlook 2010 for the Email client software and use email from Gmail. (to set Gmail using Microsoft Outlook you can see at previous post ).
Tips trick about Computer & Smartphone.