Signup Confirmation Standard and Pro-Form

As i was digging for information on the Signup confirmation emails, i noticed that the Default information are different from the Standard to the Pro-Form, the latter having more detailed information, like the recurring payments, the duration, etc. If i use the regular Paypal buttons and NOT the Pro-form, which one would be sent by default? Would all those details be sent from the Standard Signup Confirmation or would it be sent only if i used the Pro-form?