What role do cron jobs play in optimizing mass-mail processes in PHP?

Cron jobs play a crucial role in optimizing mass-mail processes in PHP by allowing you to schedule the sending of emails at specific intervals. This helps distribute the load on the server and prevents overwhelming it with a large number of emails being sent simultaneously. By using cron jobs to send emails in batches, you can improve the performance of your mass-mail process and ensure that emails are delivered efficiently.

// Example of a PHP script to send mass emails using cron jobs

// Connect to the database and fetch email addresses
// Code to fetch email addresses from the database goes here

// Loop through the email addresses and send emails in batches
// Code to send emails in batches goes here

// Close the database connection
// Code to close the database connection goes here