Added a toggle to only show the custom email checkbox if sending is selected. Added animation.
Added a toggle to only show the custom email checkbox if sending is selected. Added animation.

EduPepperPDTesting/pepper2013-testing,EduPepperPDTesting/pepper2013-testing,EduPepperPDTesting/pepper2013-testing,EduPepperPDTesting/pepper2013-testing,EduPepperPDTesting/pepper2013-testing,EduPepperPDTesting/pepper2013-testing