[jQuery] Forms: Email before submit

Hello everybody.
I have a form which data has to be sent to a CRM (salesforce), so in
the form action I have to include "https://www.salesforce.com/
servlet/...", but I need to send emails before the form submits,
because how the form is in an external url, I can't manage the data
once the form is submitted.
Any idea of how can manage that?
Thanks a log.