Scheduling CiviMail
You should consider scheduling mail particularly if you mail out to thousands of addresses. Mailings hog server resources, so it is always best to schedule them to your server when your server is least busy.
How to do it…
CiviCRM has an easy–to–configure scheduling system for CiviMail.
Ensure that you have set up a cron job on your web server.
Navigate to Administer | System Settings | Scheduled Jobs and make sure that the Mailings Scheduler option is set to run at regular intervals.
Navigate to Mailings | New mailing and create your new mailing.
In the last screen, ensure the Send Immediately box is unchecked. Then schedule your mail.
See also
The Setting up cron using cPanel recipe in Chapter 1, Setting Up CiviCRM