Another Form Question

is there a way to duplicate the E-Mail field, and both E-Mails must be the same. When not it will show a error message?

And is there a way to send after clicking the button a specific mail to the email address in the email field ? But 2 different mails when different checkboxes are selected. For example when I select checkbox 1 an E-Mail was sending and Checkbox two a different E-Mail was send?

Sorry for my English