symfony 3) formating an emailfield

If you want to format your email textfield you can simply add the EmailType to the formbuilder. in your FormType

Just include the namespace before usage: 
use Symfony\Component\Form\Extension\Core\Type\EmailType;



If you want some more configuration you can user the manual:
http://symfony.com/doc/current/reference/forms/types/email.html

All FieldType are found here:
http://symfony.com/doc/current/reference/forms/types.html