I don't see cron in their documentation under "Advanced" but they say it's there so maybe we can figure it out.
I believe that if any file exists in the cron directory it will be run at the interval set for that directory. Do you have directories called, for instance, "cron.daily", or "cron.hourly"?
I am fairly certain that files in a cron directory can have any extension to be executed, but they must be executable. In your FTP program, right click on the file and choose "Permissions". Make the Linux permissions "755" (or just make sure it's executable for all types of users).
In that file, set up a "shell" script with 2 lines:
#!/bin/sh
/usr/bin/wget -O /dev/null -T 0 http://yoursite.com/mail/dailymail.php?pw=YourDailyMailPass 1> /dev/null 2> /dev/null
If the cron folder does not have a descriptive name for the timing, then it could work differently. From my experience I believe you may have to edit a specific filename which might already be created in the folder. The file should contain your lines of cron including timing. The file would not have to be executable, and should contain a single line that might look like (timing for 1:10am):
10 1 * * * /usr/bin/wget -O /dev/null -T 0 http://yoursite.com/mail/dailymail.php?pw=YourDailyMailPass 1> /dev/null 2> /dev/null
If none of this works via FTP you might want to access the SSH shell, which appears to be a part of your hosting package as per their
help page.
A free SSH client is available
here.
You will likely need to connect with your FTP username and password. Once connected and at a Linux prompt, follow these
instructions.
When you save the cron file it should say something like "crontab updated".
If you do access the shell, it's a good idea to check if "wget" is available. Type in "which wget" at the prompt and it should show you the complete path to the program. If it says "not found" we might have to look into an alternative for use with your cron task and CGI scripts, such as "curl", or "fetch".
Regards