send mail in every on minute in wordpress through cron

1/**
2 * @snippet       Schedule Email to WooCommerce Admin Every 3 Hours
3 * @how-to        Get CustomizeWoo.com FREE
4 * @sourcecode    https://businessbloomer.com/?p=106360
5 * @author        Rodolfo Melogli
6 * @compatible    WooCommerce 3.5.4
7 * @donate $9     https://businessbloomer.com/bloomer-armada/
8 */
9 
10// ---- ---- ----
11// A. Define a cron job interval if it doesn't exist
12 
13add_filter( 'cron_schedules', 'bbloomer_check_every_3_hours' );
14 
15function bbloomer_check_every_3_hours( $schedules ) {
16    $schedules['every_three_hours'] = array(
17        'interval' => 10800,
18        'display'  => __( 'Every 3 hours' ),
19    );
20    return $schedules;
21}
22 
23// ---- ---- ----
24// B. Schedule an event unless already scheduled
25 
26add_action( 'wp', 'bbloomer_custom_cron_job' );
27 
28function bbloomer_custom_cron_job() {
29   if ( ! wp_next_scheduled( 'bbloomer_woocommerce_send_email_digest' ) ) {
30      wp_schedule_event( time(), 'every_three_hours', 'bbloomer_woocommerce_send_email_digest' );
31   }
32}
33 
34// ---- ---- ----
35// C. Trigger email when hook runs
36 
37add_action( 'bbloomer_woocommerce_send_email_digest', 'bbloomer_generate_email_digest' );
38 
39// ---- ---- ----
40// D. Generate email content and send email if there are completed orders
41 
42function bbloomer_generate_email_digest() {   
43   $range = 180; // 3 hours in minutes
44   $completed_orders = bbloomer_get_completed_orders_before_after( strtotime( '-' . absint( $end ) . ' MINUTES', current_time( 'timestamp' ) ), current_time( 'timestamp' ) );
45   if ( $completed_orders ) {
46      $email_subject = "Completed Orders Email Digest";
47      $email_content = "Completed Order IDs: " . implode( "|", $completed_orders );
48      wp_mail( 'your@email.com', $email_subject, $email_content );
49   }
50}
51 
52// ---- ---- ----
53// E. Query WooCommerce database for completed orders between two timestamps
54 
55function bbloomer_get_completed_orders_before_after( $date_one, $date_two ) {
56   global $wpdb;
57   $completed_orders = $wpdb->get_col(
58      $wpdb->prepare(
59         "SELECT posts.ID
60         FROM {$wpdb->prefix}posts AS posts
61         WHERE posts.post_type = 'shop_order'
62         AND posts.post_status = 'wc-completed'
63         AND posts.post_modified >= '%s'
64         AND posts.post_modified <= '%s'",
65         date( 'Y/m/d H:i:s', absint( $date_one ) ),
66         date( 'Y/m/d H:i:s', absint( $date_two ) )
67      )
68   );
69   return $completed_orders;
70}
71