How can I send an automatic email on a certain hour

PHP
1

I would like to know how could I send to all the pepole who registered
to my website an email at specific date/hour automaticlly without needing
me to log and press send.

How can I do that?

2

Set up a cron job to run the PHP script for you.

3

Oh thanks.
I seached about it a liitle bit in google and only found ways to set the date from the Control Panel (CPanel).
What if I want to change it / add more tasks without needing to go to the control panel (CPanel) evry time?
Is there a way to add a new task to the Cron Job using php functions?

4

If your functions are to be used every hour then you can include them within the same php file for the cron job.