Cronjob to send email

Hi everyone. I have a WordPress events website where I have a custom post type for the events. I have created this custom post types via Jetengine (CPT) and it has multiple fields such as date, title, etc. So I create events in this CPT. Now the task is to set up a cron job that will check what event(s) are happening today and it will fetch all the attendees of that event and send them an email reminder about the event happening today. I have a separate place (custom content type) for the user registration database so you check fetch all the details from there. Please come up only if you have experience in this and are 100% sure to do it. You can ask questions.