A way to rout application to use network interface

Is there any way to rout an application to use a network interface?

For example I use ethernet and wireless both provide internet connections.
Ethernet network is very fast but it has very strict firewall as a result, torrents, email clients and other applications that need to connect through ports not working.
Wireless network is slower but its ok for sending and receiving messages mainly but its ok for small torrents too.
Ethernet network is first on priority list, second comes wifi so mainly even if I'm connected with both of them, I'm using only Ethernet.

My question is that is there a way rout applications to use a network interface? For example i would like to set Mail.app to use only wireless network and not ethernet. Same with others applications.

Thanks in advance 🙂