Here are some useful links

add_filter( 'gform_field_value_email_usuario', 'rellenar_email_usuario' ); function rellenar_email_usuario( $value ) { $current_user = wp_get_current_user(); return $current_user->user_email; } add_filter( 'gform_pre_render_3', 'add_readonly_script' ); function add_readonly_script( $form ) { ?>