Add subscriber from php

I want to subscribe an email via functions.php.

I found this page in your website but I cant do it to work.

The part “sbscrbr_checkbox_add” worked for me.

but the “sbscrbr_checkbox_check” didnt work.

if ( isset( $_POST['submit'] ) && has_filter( 'sbscrbr_checkbox_check' ) ) {
 $sbscrbr_check = apply_filters( 'sbscrbr_checkbox_check', array(
 'email' => isset( '[email protected]' ? '[email protected]' : ''
 ) );
   if ( isset( $sbscrbr_check['response'] ) ) {
     echo $sbscrbr_check['response']['message'];
   }
}

I am searching for a filter that takes a specific email and adds it to “jl_sndr_mail_users_info” table in database.

For exaple I need something like:

$sbscrbr_check = apply_filters( 'sbscrbr_checkbox_check', array(
 'email' => isset( '[email protected]' ? '[email protected]' : ''
 ) );

Please help!