add script to additional settings area?

HI
Would I use ‘on_sent_ok’ even if mail is disabled?
I am using contact form to get address and add to database. Not only do I want that info to go to wpdb, I also want the address to go to google api query.
should I basically add my script to on_sent_ok: in the additional settings area?

http://wordpress.org/plugins/contact-form-7/