Yes it will work, but search only for message sender, message recipients will not be searched.
Some observation
1. Missing space before INNER JOIN
2. use esc_sql instead of esc_html or use $wpdb->prepare
Yes it will work, but search only for message sender, message recipients will not be searched.
Some observation
1. Missing space before INNER JOIN
2. use esc_sql instead of esc_html or use $wpdb->prepare