Application form

I’m creating a job opportunities section with in wordpress. I’ve begun by creating custom post type listings. I now need a way for someone to apply to that position, and have it sent to the organizations email. So basically, the email the application gets sent to changes based on what job they choose.

What is the best way to do this? I haven’t found a plugin to do this, and I’ve had trouble trying to process an application separately with custom PHP.

Any suggestions?