In order to send email you can use app.mailMsg() function from AcroForms specification. Add a standard button to your form and add the following code to its click event:
//Email adressee
var cToAddr = "fillproperEmail@example.com";
//Subject
var cSubLine = "Put proper subject here";
//Body
var cBody = "Name: "+firstName.rawValue+" "+lastName.rawValue+" DOB: "+DOB.rawValue+" Email Address: "+email.rawValue;
// Send an email
event.target.app.mailMsg({bUI: true, cTo: cToAddr, cSubject: cSubLine, cMsg: cBody});
Detailes about app.mailMsg() function and similar ones you can find here: http://acrobatusers.com/tutorials/print/dynamically-setting-submit-e-mail-address