CF7 validate and store data - wordpress

Question

I am trying to make custom validation to cf7 form and then store data in a custom post type if everything is valid. My problem is that even when form inputs are not valid form still sends email and store its data. Can you help me with that. Below is my code. What should I use to validate inputs first and only then store data.
Store posted data:
function save_posted_data_ios( $posted_data ) {
if( isset($posted_data['menu-377']) == "IOS" ){
$args2 = array(
'post_type' => 'np_coupon_code',
'post_status' => 'publish',
'posts_per_page' => 1,
'meta_query' => array(
array(
'key' => 'np_ccode__email',
'value' => 'null',
'compare' => 'NOT EXISTS'
),
array(
'key' => 'np_ccode__type',
'value' => 'IOS'
)
)
);
$posts_query2 = new WP_Query($args2);
$the_count_ios = $posts_query2->found_posts;
$query = new WP_Query($args2);
while ( $query->have_posts() ) : $query->the_post();
$id = get_the_ID();
$code = get_the_title();
endwhile;
if( isset($posted_data['your-email']) ){
update_post_meta($id, 'np_ccode__email', $posted_data['your-email']);
}
$to = $posted_data['your-email'];
$subject = 'Subject';
$body = $code;
$headers = array('Content-Type: text/html; charset=UTF-8');
wp_mail( $to, $subject, $body, $headers );
return $posted_data;
wp_reset_query();
}
}
add_filter( 'wpcf7_posted_data', 'save_posted_data_ios' );```
Custom error:
function my_wpcf7_validate_ios( $result_ios, $tag ) {
$type = $tag['type'];
$name = $tag['menu-377'];
$args2 = array(
'post_type' => 'np_coupon_code',
'post_status' => 'publish',
'posts_per_page' => 1,
'meta_query' => array(
array(
'key' => 'np_ccode__email',
'value' => 'null',
'compare' => 'NOT EXISTS'
),
array(
'key' => 'np_ccode__type',
'value' => 'IOS'
)
)
);
$posts_query2 = new WP_Query($args2);
$the_count_ios = $posts_query2->found_posts;
if ( $the_count_ios == 0 && $_POST['menu-377'] == "IOS"){
$result_ios->invalidate( $tag, wpcf7_get_message( 'invalid_ios' ) );
}
return $result_ios;
}
add_filter( 'wpcf7_validate_select*', 'my_wpcf7_validate_ios' , 10, 2 );
add_filter( 'wpcf7_messages', 'mywpcf7_ios_messages' );
function mywpcf7_ios_messages( $messages ) {
return array_merge( $messages, array(
'invalid_ios' => array(
'description' => __( "No IOS Coupons Left", 'contact-form-7' ),
'default' => __( 'No IOS Coupons Left.', 'contact-form-7' )
)
));
}