IMAP functions enable you to operate with the IMAP protocol, as well as the NNTP, POP3 and local mailbox access methods.

Be warned, however, that some IMAP functions will not work correctly with the POP protocol. Make sure your PHP is enabled with imap via the phpinfo() function

Cron executes commands at specified intervals. These commands are called "cron jobs." Cron is available on Unix, Linux and Mac servers. Windows servers use a Scheduled Task to execute commands.

The cron command

To edit a crontab through the command line, type:

crontab -e

In the following example, the crontab command shown below will activate the cron tasks automatically on the hour:

0 * * * * wget -O - -q -t 1 http://www.indersingh.com/cron.php

# +---------------- minute (0 - 59)
# | +------------- hour (0 - 23)
# | | +---------- day of month (1 - 31)